TripBuddy Guide
Every holiday season, the same argument plays out: is it cheaper to drive or fly? The usual math — gas for the tank versus the price of a plane ticket — is wrong, because gas is not the cost of driving, and the ticket price is not the cost of flying.
With Thanksgiving airfare running high this year, getting the comparison right matters. This guide walks through the true cost of each option, the distance thresholds where the answer flips, and a worked example you can adapt to your trip.
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The short answer: what actually goes in the math
Here is the honest framework before any numbers:
- Driving’s true cost uses the IRS mileage rate, not just fuel. For 2026, the standard mileage rate is $0.725 per mile, covering fuel plus wear and depreciation. Fuel-only math undercounts driving badly.
- Flying’s true cost is fare plus everything around it. Checked bags run typically $35–$45 per bag, airport parking or transfers add up, and you may need a rental car at the destination.
- The number of travelers changes the answer more than distance does. One car carries four people for roughly the same cost — while four plane tickets cost about four times one ticket.
- Watch two distance thresholds. Under about 500 miles, driving usually wins. Around 700 miles, the answer starts flipping toward flying. Between them, the details decide.
- Cost is not the only currency. Vacation days, weather risk, and whether you need a car at your destination all count.
What driving really costs
The biggest mistake in this debate is treating driving as the cost of a tank of gas. Fuel is only one slice. Your car burns through tires, brakes, oil, and depreciation with every mile, and a 600-mile round trip puts 600 miles on the odometer regardless of how efficiently you drove them.
That is why the 2026 IRS standard mileage rate of $0.725 per mile is such a useful anchor. It reflects the full cost of driving a personal vehicle — fuel, maintenance, and depreciation — not just what you paid at the pump. A trip that feels like “a tank or two of gas” actually costs roughly $0.725 for every mile on the route.
Multiply that by your trip distance and you get a driving cost that surprises most people, because it is honest. Then add what the rate does not cover: tolls on toll corridors, an overnight hotel stop if the drive needs one, meals on the road, and parking at your destination. Also count vacation time: a ten-hour drive each way can burn a day or more of a short holiday trip just getting there.
None of this means driving is expensive in absolute terms. It means driving costs more than the fuel-only estimate suggests — and becomes genuinely cheap only when that fixed cost is spread across a full car.
If you fly instead, remember the destination side: you may still need wheels when you land. You can explore rental car options for your destination before you price out either plan.
What flying really costs
Now do the same honest accounting for flying, starting from the headline fare.
Hopper’s 2026 Holiday Travel Index puts average Thanksgiving round-trip domestic airfare at $402 this year — up 31% year over year. That number moves by route and booking timing, but it sets the environment: holiday flights in 2026 are meaningfully pricier than a year ago.
Then add the layers:
- Checked bags. Typically $35–$45 per bag each way. A family checking bags round trip can add several hundred dollars that never appeared in the fare search — the single biggest surprise in most flying math.
- Airport parking or transfers. Parking for a multi-day holiday trip, or rideshares on both ends, adds up quickly.
- A rental car at the destination. If you cannot borrow a car where you are going, factor in the rental — and price it before declaring flying cheaper. Our guide on whether to book a rental car early or wait helps with that timing call.
- Time cost. Security, boarding, connections, and baggage claim turn a two-hour flight into a five- or six-hour travel day. Compare that honestly against drive time, not flight time against drive time.
Stacked together, flying’s true cost per person is usually well above the headline fare — and per family, the gap is bigger still.
A worked example: 600-mile round trip
Here is a clearly-labeled example for a 600-mile round trip, built only from the figures above. Adjust it to your actual route and prices.
Driving the example trip: 600 miles × $0.725 per mile = $435 for the full driving cost — fuel, wear, and depreciation. No overnight stop is needed at this distance, and this example assumes no tolls. Example driving total: about $435, covering up to four travelers for that same amount.
Flying solo, as an example: a round-trip fare of $402 (the Hopper average, used here as an example), one checked bag at about $80 round trip as an example within the typical range, and example airport parking of $90. Example flying total, solo: about $570. Driving wins for the solo traveler here — $435 by car against noticeably more by air.
Flying as a family of four, as an example: four fares at $402 come to $1,608 before a single bag is checked, and checked bags multiply fast with four travelers. Example flying total: well over $2,000, against the same roughly $435 driving cost. For a group, driving is not close — it is decisive.
The pattern generalizes: driving’s cost is per car, flying’s cost is per person. Every added traveler tips the scale toward the car.
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The distance thresholds: about 500 and about 700 miles
Distance still matters, and two rough thresholds are worth remembering:
- Under about 500 miles, driving usually wins. At 500 miles, the full driving cost is roughly $363 per car. Flying involves a fare, bags, and transfers above that per person — and for a group, it is not close. Short flights are also the most annoying: most of the travel day is airports, not sky.
- Around 700 miles, the answer starts flipping. Full driving cost is about $508 per car, and the drive is long enough to cost real time and possibly an overnight stop. For a solo traveler or a couple, a well-priced flight starts to look competitive.
- Between 500 and 700 miles, the details decide. Traveler count, tolls, a possible hotel night, and fares on your specific route matter more than any rule of thumb.
These are heuristics, not guarantees. A toll-heavy corridor or a bargain fare on your route can shift either threshold.
The exceptions that flip the verdict
- Toll corridors. Heavy toll routes can add real money to a drive that looked cheap. Price tolls before you commit.
- The overnight hotel stop. If the drive needs a hotel en route, add that night to driving — it can erase the car’s advantage, especially for a couple.
- Winter-weather risk. Snow and ice can turn a cheap drive into a long, stressful, or dangerous one. Flying is not weather-proof either, but winter driving risk is worth weighing honestly.
- Limited vacation days. A ten-hour drive each way burns two full days of a short trip. If your Thanksgiving visit is only four days, flying can buy back half of it.
- Needing a car at the destination. If you fly in and cannot borrow wheels, a rental car can flip the verdict back toward driving. Our guide to rental car toll fees and transponders is worth a read if toll roads are part of the trip either way.
- Crowded roads. Nearly 90% of Thanksgiving travelers go by car, per AAA — so holiday drive-time estimates are not normal-week estimates. Add a buffer.
Your decision framework
When your trip is on the table, work through this sequence:
- Count the travelers first. Groups of three or four almost always favor the car; a solo traveler should do the full math.
- Estimate the round-trip distance. Under 500 miles, start with driving. Around 700, start comparing. Between, dig into details.
- Price both totals honestly. Driving: miles × $0.725, plus tolls, a hotel stop, and parking. Flying: fares plus bags, parking or transfers, and a rental car if you need one.
- Add the time and weather judgment. Vacation days burned, winter risk, and comfort count alongside dollars.
- Decide once, then plan the rest. Book the rental car if you are flying, or check the car’s condition and route if you are driving.
There is no universally cheaper answer — but there is a right answer for your trip, once both sides are counted honestly.
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Last reviewed: October 19, 2026