2025 MODEL YEAR
International 25FB
- family
- off-grid
Sleeps up to 6, Front Primary Bed, Two-Piece Mid-Ship Shower and Lavvy, Convertible Booth Style Dinette with Connected Lounge, Rear Hatch Available
How this floorplan stacks up across the lineup
Specifications
- Overall bumper-to-hitch length, including the tongue.Length
- 26' 2"
- Widest point of the exterior shell — determines lane fit and campsite clearance.Ext. width
- 8' 5"
- Overall height with A/C unit — the clearance you need for bridges, tunnels, and covered campsites.Ext. height
- 9' 7" (with A/C)
- Standing headroom inside with A/C unit — measured at the tallest point.Interior height
- 6' 7" (with A/C)
- Empty weight from the factory — no water, propane, or personal gear.Dry weight
- 5,700 lb
- Gross Vehicle Weight Rating — the maximum safe total weight when fully loaded.GVWR
- 7,300 lb
- GVWR minus dry weight. Everything you add (water, propane, gear) must fit within this.Cargo capacity (CCC)
- 1,600 lb
- The downward force the tongue puts on your tow vehicle's hitch.Hitch weight
- 860 lb
- Maximum sleeping positions from the factory floorplan layout.Sleeps
- 6
- Single-axle trailers are lighter and easier to maneuver; dual-axle adds stability for larger, heavier models.Axle
- Dual axle
- Fresh = clean drinking water. Gray = sink/shower drainage. Black = toilet waste.Fresh / gray / black
- 39 / 39 / 39
- Factory rooftop solar panel wattage for charging the house battery off-grid.Solar
- 300 W (optional)
- House battery capacity in kilowatt-hours — powers lights, outlets, and appliances.Battery
- 2.5 kWh
- A 0–100 composite: battery kWh, solar watts, and tank sizes vs. the lineup.Off-grid score
- 58 / 100
- Manufacturer's Suggested Retail Price — the base sticker price before options or dealer markup.MSRP
- $133,900
Size & fit
How the International 25FB measures up — clearance checks and campsite compatibility.
Will it fit?
Your International 25FB is 9' 7" tall (with A/C) and 8' 5" wide. Here’s how it measures against common openings.
Height includes rooftop A/C. Without A/C the trailer is ~2–3″ shorter. Always measure your specific unit before a tight clearance.
Will your rig fit the site?
Your International 25FB is 26' 2" long. Combined with a typical tow vehicle (~19'), the total rig is about 46 feet.
Lengths are bumper-to-bumper. Add 2–3' for hitch gap. Always confirm site dimensions with the campground before booking.
Weight & cargo capacity
Weight budget: where your 1,600 lb goes
When all tanks are full and propane is loaded, here's how your 1,600 lb cargo capacity (CCC) breaks down.
Comfortable margin for gear, food, and supplies.
How much can you pack?
This International 25FB has 1,600 lb of cargo carrying capacity (CCC). Water and propane eat into that before you load a single bag — here's what's left for your gear.
Remaining for personal gear after water and propane (23% of CCC used by consumables).
Add common gear to see the impact:
How this is calculated
CCC (Cargo Carrying Capacity) is the maximum weight you can add to the trailer beyond its dry (empty) weight. Fresh water weighs 8.34 lb per gallon (USGS standard). Propane weight is the fuel itself — standard Airstream dual 20 lb tanks hold 40 lb of LP gas. After subtracting these consumables, the remainder is what you have for personal belongings, food, and gear. Exceeding CCC means exceeding the trailer's GVWR — an unsafe and often illegal condition. When in doubt, weigh your loaded trailer at a truck scale.
Your tow vehicle must be rated for at least
7,300 lbfully-loaded GVWR
This is the official Airstream GVWR — the most this floorplan can weigh loaded, and the minimum tow rating your vehicle needs. Official hitch (tongue) weight is 860 lb (~12% of GVWR). Match it to your vehicle →
Tow setup & safety
Can your vehicle tow it?
Checks this floorplan's loaded weight (7,300 lb GVWR) against a tow vehicle's three real limits — tow rating, payload, and combined weight (GCWR). Pick your vehicle:
Good margin on every limit. Binds on combined weight (gcwr) at 78%.
Modeled config: Crew Cab 4×4 · 5.3L V8 · Max Trailering Package (NHT). source 1 · source 2
How this is calculated
Three checks, each from the tow vehicle's published 2025-spec ratings for one stated configuration:
- Trailer tow rating — the trailer at its loaded weight (GVWR, not dry) vs. the truck's max tow rating.
- Payload — loaded tongue weight (modeled at 13% of trailer GVWR, the mid of the 10–15% rule) plus people & gear in the cab vs. the truck's payload.
- Combined weight (GCWR) — truck + trailer + everything vs. the gross combined weight rating.
The verdict is the worst of the three: ≤80% of a limit is comfortable, 80–100% is tight, over 100% exceeds it. Manufacturers' "max tow" and "max payload" usually come from different configurations and are mutually exclusive, so each vehicle here uses ONE coherent, sourced config. These are planning figures — your truck's door-jamb certification label is the final word.
Hitch & towing setup
What you need to tow the International 25FB safely — based on its 7,300 lb GVWR and 860 lb tongue weight.
Rated for up to 8,000 lb trailer weight / 800 lb tongue weight. Your International 25FB at 7,300 lb GVWR needs at least this class.
With 860 lb tongue weight (official dry hitch weight), a WDH redistributes load across all axles for level towing and better braking. Many states require one above 5,000 lb GVWR.
At 7,300 lb loaded, wind gusts and passing trucks can induce sway. A friction or dual-cam anti-sway device keeps things stable — often integrated into the WDH.
Standard for all Airstream travel trailers — carries running lights, turn signals, brakes, 12V charge, and electric brake signal. Your tow vehicle needs a matching 7-pin socket.
Required — all Airstream trailers have electric brakes. An in-cab brake controller syncs trailer braking with your vehicle. Proportional (vs. time-delayed) gives smoother stops.
Hitch class is the minimum required. Always verify your specific tow vehicle's hitch receiver rating — some vehicles come with a lower-rated receiver than their tow rating allows. WDH and anti-sway recommendations follow industry best practices for this weight class.
What can tow it?
19 of 26 popular tow vehicles can handle this trailer's 7,300 lb GVWR. Green = comfortable (under 80%), yellow = within limit, red = exceeds rating.
| Vehicle | Tow rating | Margin | Verdict |
|---|---|---|---|
| Jeep Wrangler | 3,500 lb | -3,800 lb | Over limit |
| Kia Telluride | 5,000 lb | -2,300 lb | Over limit |
| Hyundai Palisade | 5,000 lb | -2,300 lb | Over limit |
| Toyota 4Runner | 6,000 lb | -1,300 lb | Over limit |
| Jeep Grand Cherokee | 6,200 lb | -1,100 lb | Over limit |
| Toyota Tacoma | 6,400 lb | -900 lb | Over limit |
| Mercedes-Benz G550 | 7,000 lb | -300 lb | Over limit |
| GMC Hummer EV SUV | 7,500 lb | +200 lb margin | Tight |
| Ford Ranger | 7,500 lb | +200 lb margin | Tight |
| Rivian R1S | 7,700 lb | +400 lb margin | Tight |
| Chevrolet Colorado | 7,700 lb | +400 lb margin | Tight |
| Land Rover Range Rover | 7,715 lb | +415 lb margin | Tight |
| Chevrolet Suburban | 8,000 lb | +700 lb margin | Tight |
| Land Rover Defender 110 | 8,201 lb | +901 lb margin | Tight |
| Chevrolet Tahoe | 8,400 lb | +1,100 lb margin | Tight |
| Toyota Sequoia | 9,010 lb | +1,710 lb margin | Tight |
| Lexus GX 550 | 9,063 lb | +1,763 lb margin | Tight |
| Ford Expedition | 9,600 lb | +2,300 lb margin | Comfortable |
| Chevrolet Silverado 1500 | 11,000 lb | +3,700 lb margin | Comfortable |
| Tesla Cybertruck | 11,000 lb | +3,700 lb margin | Comfortable |
| Rivian R1T | 11,000 lb | +3,700 lb margin | Comfortable |
| Toyota Tundra | 11,170 lb | +3,870 lb margin | Comfortable |
| Ram 1500 | 11,340 lb | +4,040 lb margin | Comfortable |
| GMC Hummer EV Pickup | 12,000 lb | +4,700 lb margin | Comfortable |
| GMC Sierra 1500 | 13,000 lb | +5,700 lb margin | Comfortable |
| Ford F-150 | 13,500 lb | +6,200 lb margin | Comfortable |
Journey performance
Fuel costs and terrain challenges for towing the International 25FB.
Trip fuel cost
Estimate what it costs to tow this International 25FB (7,300 lb loaded) on a road trip. Fuel economy drops 55% when towing — the heavier the trailer relative to the tow vehicle, the bigger the hit.
How this is calculated
Gas vehicles: towing cuts fuel economy 30–60% vs. unladen driving. The penalty scales with the weight ratio (trailer GVWR ÷ tow-vehicle curb weight): a 20% base drag from the hitch + aerodynamics, plus 25% per 1.0 weight ratio, capped at 60%. This aligns with real-world Airstream towing reports (8–15 MPG across the lineup). Cost = distance ÷ towing MPG × price per gallon.
Electric vehicles: the same weight-ratio penalty is applied to each EV's EPA-rated energy use (kWh/100mi), so a ~50% penalty roughly doubles consumption — consistent with the ≈50% range loss EV owners report when towing. Cost = distance ÷ 100 × towing kWh/100mi × price per kWh. We never apply gasoline math to an EV.
These are planning estimates — your actual range depends on speed, terrain, wind, and driving style.
Mountain & grade performance
How this International 25FB (7,300 lb loaded) performs on steep grades. Pick a grade or choose a famous mountain pass.
Or pick a mountain pass:
- Grade resistance
- 437 lb
- Rolling resistance
- 110 lb
- Total pull force on grade
- 547 lb
- Engine power loss at altitude
- 0% (sea level)
On a 6% grade, your engine must overcome an extra 437 lb of gravity pulling the trailer back. Use a low gear, keep speed at or below 45 mph, and monitor transmission temperature.
Grade forces are physics-based (GVWR × sin of grade angle). Altitude power loss assumes ~3% per 1,000 ft for naturally aspirated engines (turbocharged vehicles lose less). Speed recommendations are conservative rules of thumb — actual performance depends on your tow vehicle's power, gearing, and temperature. Always use tow/haul mode and downshift on sustained grades.
Off-grid capability
How long the International 25FB can sustain off-grid — power endurance and water autonomy in one view.
How long off-grid?
Boondocking endurance for this floorplan — modeled from its real 2.5 kWh battery, 300 W solar, and 39 gal fresh / 39 gal gray / 39 gal black tanks.
House battery runs down first under these assumptions.
How this is calculated
Power: usable battery = nameplate kWh × 0.8 (blended depth-of-discharge). Daily load presets — light ≈ 1,500, moderate ≈ 2,800, heavy ≈ 5,000 Wh/day — from published boondocking power budgets, excluding air conditioning (no trailer battery runs rooftop AC for long). Solar harvest = panel watts × peak-sun-hours (summer 5.5, spring/fall 4.0, winter 2.5) × 0.7 system derate. Water: per-person daily use (light 3 / moderate 5 / heavy 8 gal fresh; gray ≈ 80% of fresh; black from toilet use) against the real tank sizes. Endurance is whichever runs out first. Estimates for planning — your real usage varies.
Water autonomy
How many days can the International 25FB camp before needing a refill or dump? Adjust people and usage below.
← Limiting factor
At moderate usage: 6 gal fresh / 5 gal gray / 2 gal black per person per day. Normal showers, regular cooking.
Estimates assume typical RV usage patterns. Actual consumption depends on shower habits, cooking, laundry, toilet type, and climate. Gray includes sink and shower drain; black is toilet only.
Propane duration
How long will 40 lb of LP gas (standard dual 20 lb tanks) last on the International 25FB? Adjust each appliance below.
BTU rating varies 20–35k; uses ~25k avg
6-gal tank heater, ~12k BTU
Two burners avg ~9k BTU combined
~8k BTU when in use
~1.5k BTU, runs 24/7 on LP if no hookup
Standard Airstream travel trailers carry dual 20 lb (DOT) propane tanks — 40 lb total LP capacity. 1 lb LP = 21,594 BTU (EIA). Furnace BTU ratings vary by model (20k–35k); we use 25k as a mid-range estimate. Actual duration depends on thermostat settings, altitude, wind, and outside temperature.
Shore power planner
The International 25FB has 30A shore power service (3,600W max). Check the appliances you plan to run simultaneously.
✓ Comfortable headroom
30A service at 120V = 3,600W continuous. Startup surges (especially A/C compressors) can briefly draw 2–3× running watts. If your campsite has only 20A (2,400W), reduce load accordingly. Wattages shown are typical running draws — check your appliance labels for exact ratings.
Hookup & adapter guide
The International 25FB uses 30A shore power (TT-30 plug). Here's the gear you need for a trouble-free hookup at any campsite.
⚡ Power adapters
Your 30A cord handles up to 3,600W — enough for A/C or microwave (not both at once).
Water hookup
Sewer & dump
All Airstream travel trailers use standard RV connections. Adapters listed are the most common needs — your campground mix may vary. Always check polarity with a pedestal tester before plugging in.
Floor plan
Tap a numbered point to see what's where. Zones placed against the official 25FB diagram.
- 1Front primary bed — Walk-around front queen — the fixed primary sleeping zone, ahead of the bath.
- 2Shower — Curb-side shower stall — the "two-piece" mid-ship bath splits the shower from the toilet across the aisle.
- 3Toilet & lav — Street-side toilet and sink, opposite the shower — a full-width wet path mid-coach.
- 4Wardrobe — Hanging wardrobe and dresser storage between the bath and the rear lounge.
- 5Cooktop — Three-burner cooktop on the street-side galley run.
- 6Galley & sink — Stainless sink and counter with the fridge alongside — the kitchen core.
- 7Rear lounge & dinette — Convertible booth dinette and connected lounge across the rear — folds down for guests, which is how this plan sleeps up to six.
Interior décor options
Official Airstream interior packages for the International — cabinetry, upholstery, and coordinating materials. Décor is offered by family, so these apply across its floorplans.
Coastal Cove with Aqua Ultraleather
Light blue Aqua UltraLeather seating plays off of the sea white walls, seaside accents, ash countertops, and Herringbone chevron pattern flooring.
Coastal Cove with Seashell Ultraleather
Light grey Seashell UltraLeather seating meshes with the sea white walls, seaside accents, ash countertops, and Herringbone chevron pattern flooring.
Strengths
- Balanced size for most parks
- Strong solar / off-grid ready
- Sleeps 6
Trade-offs
- Plan payload carefully
Frequently asked questions
How much does the 2025 International 25FB weigh?
The International 25FB has a dry weight of 5,700 lb and a Gross Vehicle Weight Rating (GVWR) of 7,300 lb, giving you 1,600 lb of cargo carrying capacity for water, gear, and personal items. It falls in the Half-ton towable tow class.
What vehicle do I need to tow the International 25FB?
You need a tow vehicle rated for at least 8,760 lb towing capacity (GVWR × 1.2 safety margin). The hitch weight is 860 lb, which is 12% of GVWR — your vehicle's payload must handle this plus passengers and gear. Popular matches include half-ton and three-quarter-ton trucks and large SUVs; use the tow calculator on this page for your specific vehicle.
What are the tank sizes on the International 25FB?
The International 25FB carries 39 gallons fresh water, 39 gallons gray, 39 gallons black. With moderate use for two people, the fresh water tank lasts approximately 6.5 days before needing a refill.
How good is the International 25FB for boondocking and off-grid camping?
The International 25FB scores 58 out of 100 on our off-grid rating, which is good for dry camping. It comes with 300W of optional solar and a 2.5 kWh battery bank. Use the off-grid estimator on this page for a detailed breakdown by season and usage level.
How much does the 2025 International 25FB cost?
The base MSRP for the 2025 International 25FB is $133,900. Actual dealer prices may vary; options and packages can add to the total. Use the financing calculator on this page to estimate monthly payments, and the ownership cost tool for total cost of ownership over time.
How long is the International 25FB and will it fit at campgrounds?
The International 25FB is 26' 2" overall (bumper to hitch), 8' 5" wide, and 9' 7" tall with A/C. At this length, it is a mid-size rig requiring some towing experience. Most national park and state park campgrounds accommodate trailers up to 27 feet; check individual site limits for longer rigs. Check individual site limits before booking.
How many people can sleep in the International 25FB?
The International 25FB sleeps up to 6 people using the factory floorplan layout. Sleeping positions typically include a main bed, a convertible dinette or sofa, and additional bunk or convertible sleeping areas. Check the floor plan section on this page for the exact layout.
Trip Ready Checklist
Pre-departure checklist for the International 25FB, using its real specs. Check off items as you go — progress saves on this device.
Water System
Tow & Safety
Power & Gas
Interior Prep
Ideal for
Seasonal camping guide
How well the International 25FB handles each season, based on its real specs.
- 39-gal fresh tank handles dispersed sites
- 300W solar works well in spring sun (~4h peak)
- Check tire pressure after winter storage
- 300W solar at peak output — 5+ sun hours/day
- Refill every 2–3 days at dispersed sites
- A/C draws ~1,100W — requires shore power or generator
- 2.5 kWh battery covers longer nights
- Strong off-grid score for shoulder season
- Prepare tanks for first frost — insulate exposed lines
- Heavier build provides better insulation mass
- Furnace runs on propane + 12V fan — no shore power needed
- Small tanks need frequent refills in cold
Lifestyle fit
How well the International 25FB matches common camping styles, based on its real specs.
Moderate off-grid capability
Sleeps 6, works for smaller families
Manageable for occasional trips
Livable for extended trips, modest for full-time
Needs a capable half-ton or better
Winterization & Storage Guide
End-of-season storage checklist for the International 25FB, using its real specs. This International 25FB has 3 tanks to drain. Check off items as you go — progress saves on this device.
Water System
-
Open the low-point drain valve until the tank is fully empty.
-
Open the gray valve and let it drain completely at a dump station.
-
Flush thoroughly before draining. Use a tank rinse wand if available.
-
Set the bypass valve so antifreeze flows through the lines, not the heater tank.
-
Pour non-toxic RV antifreeze into each P-trap: kitchen, bathroom sink, shower, and toilet bowl.
-
Turn on hot and cold at each faucet, then leave slightly open during storage.
Battery & Electrical
-
Disconnect the negative terminal. Store fully charged and on a trickle charger if possible.
-
If disconnecting the battery, cover panels to prevent charge buildup with no load.
-
Switch off the main breaker and unplug shore power cord.
Propane & Gas
-
Close the main propane valve on each tank.
-
Run the stove burners until they go out to purge propane from the lines.
Exterior
-
Check all roof seams, vents, and antenna bases for cracks. Reseal with Dicor if needed.
-
UV and flat-spotting damage tires in storage. Use covers or move the trailer monthly.
-
Retract fully, ensure no moisture is trapped. Close all vents and windows.
-
Support the 5,700 lb dry weight on leveling blocks — avoid soft ground.
Interior
-
Wipe all surfaces, empty the fridge (leave door propped open), remove perishables.
-
Prevents mold and mildew buildup. Consider moisture absorbers in enclosed spaces.
-
DampRid or similar in the bathroom, under dinette, and in closets.
Storage & parking
Practical sizing for storing and maneuvering your International 25FB (27' long, 9.58' tall).
Storage unit
12' × 30' enclosed or 10' × 35' covered
Need 31' minimum slot length
Garage fit
Needs an oversized or RV-height garage
9.58' clearance needed (with A/C)
Maneuvering
Moderate-hard — need pull-through or wide back-in sites
27' overall parking footprint
Maintenance schedule
Key maintenance items for the International 25FB. Intervals follow Airstream's published schedule and appliance manufacturer recommendations.
| Task | Interval | Est. cost | Type | |
|---|---|---|---|---|
| Tire pressure check | Before every trip | Free | Safety | |
| Lug nut torque | Before every trip | Free | Safety | |
| LP & CO detector test | Before every trip | Free | Safety | |
| Roof seam inspection | Every 6 months | $0–50 DIY | Routine | |
| Wheel bearing service | Every 12 months / 12k mi | $150–400 pro | Routine | |
| Solar panel cleaning | Every 3 months | Free | Routine | |
| Battery health check | Every 6 months | Free | Routine | |
| Water heater anode rod | Annually | $10–30 DIY | Routine | |
| Winterization / de-winterization | Seasonal | $50–150 | Seasonal | |
| Fire extinguisher inspection | Annually | Free | Safety |
Gallery
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In your price range
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