2025 Airstream Interstate 24GL vs 2024 Thor Four Winds 22E

Detailed Comparison

The 2025 Airstream Interstate 24GL and 2024 Thor Four Winds 22E might look similar on paper, but dig into the details and you'll find meaningful differences.

The Airstream Interstate 24GL measures 22.0 ft in length at 11,000 lbs, compared to the Thor Four Winds 22E's 23.5 ft and 17,700 lbs. GVWR ratings sit at 13,500 lbs and 21,600 lbs respectively.

For sleeping arrangements, the Airstream Interstate 24GL offers room for 2 and the Thor Four Winds 22E can handle 7.

Looking at self-sufficiency, the Airstream Interstate 24GL packs 34 gal of fresh water and 250W of solar. The Thor Four Winds 22E counters with 40 gal fresh water and 400W solar.

Price is often the deciding factor. The Thor Four Winds 22E starts at $108,000 MSRP, while the Airstream Interstate 24GL commands $128,000 — a $20,000 gap.

Families with kids will appreciate the extra sleeping capacity and living space. Off-grid campers should pay close attention to solar wattage, battery capacity, and tank sizes. Weekend warriors will appreciate the easier towing and quicker setup of the lighter model.

Take these specs as a starting point, then go see them in person — there's no substitute for stepping inside.

When it comes to water management, tank capacity plays a major role in how long you can stay off the grid. The 2024 Thor Four Winds 22E carries 40 gallons of fresh water versus 34 gallons in the 2025 Airstream Interstate 24GL, providing an extra 6 gallons for longer boondocking stays. Gray water capacity favors the 2024 Thor Four Winds 22E at 43 gallons versus 21 gallons, which directly affects how often you need to find a dump station. The 2024 Thor Four Winds 22E also leads in black water capacity with 38 gallons compared to 19 gallons, an important consideration for families or full-time travelers.

Electrical systems are increasingly important as RVers rely on more electronics and appliances. With 400W of solar, the 2024 Thor Four Winds 22E outpaces the 2025 Airstream Interstate 24GL's 250W setup, offering better energy independence away from hookups. Battery storage gives the edge to the 2025 Airstream Interstate 24GL with 500Ah versus 150Ah, translating to longer run times for lights, fans, and charging devices overnight. The 2025 Airstream Interstate 24GL's 2000W inverter can handle heavier loads than the 1500W inverter in the other unit, which matters if you plan to run a microwave, coffee maker, or hair dryer without shore power.

For solo travelers and couples who value maneuverability, the 2025 Airstream Interstate 24GL with its more compact footprint will be easier to navigate through tight campgrounds and mountain passes. Families with children should lean toward the 2024 Thor Four Winds 22E, which sleeps up to 7 and provides more flexibility for overnight guests. Full-time RVers who spend extended periods off-grid will benefit most from the 2024 Thor Four Winds 22E's power setup and the 2024 Thor Four Winds 22E's water reserves, as these directly impact daily comfort and independence from hookups. Weekend warriors and seasonal campers who primarily stay at full-hookup campgrounds may find that the differences in tank sizes and power systems matter less, allowing them to focus on floor plan preference and overall comfort instead.

From a value perspective, the 2024 Thor Four Winds 22E at $108,000 MSRP represents a $20,000 savings over the 2025 Airstream Interstate 24GL at $128,000, a 19% price difference. Breaking it down per sleeping position, the 2025 Airstream Interstate 24GL costs roughly $64,000 per berth while the 2024 Thor Four Winds 22E comes in at $15,429 per berth. On a cost-per-foot basis, the 2025 Airstream Interstate 24GL runs about $5,818 per linear foot versus $4,596 for the 2024 Thor Four Winds 22E, which helps contextualize the value each unit delivers for its size. It is also worth considering that Airstream and Thor have different dealer networks and warranty programs, which can significantly impact your long-term ownership experience and resale value down the road.