Gas averaged $4.33 a gallon on October 15, according to AAA, more than a dollar above last year and a record for this time of year. So if you’re weighing driving vs flying for Thanksgiving, the pump is probably nudging you toward the airport. Don’t let it. Run the numbers honestly and the price spike that should scare you is the one on your plane ticket.
The honest number is 29 cents a mile. Most people use either a number that’s too small or one that’s way too big, and both mistakes push them toward the wrong choice.
Your car costs about 29 cents a mile for this trip, not 72.5
The local news versions of this comparison (I read several) do the same thing: plug the route into a gas calculator, put the fuel total next to a Google Flights fare, and call it. That leaves out tires, oil and the slow grind of wear that a 900-mile weekend puts on your car. It undercounts driving.
The other camp makes the opposite mistake. They hear that the IRS standard mileage rate for 2026 is 72.5 cents and treat that as the cost of the drive. But the IRS builds the business rate from both fixed and variable costs, and the fixed ones (insurance, registration, most of your depreciation) get paid whether you drive to your mom’s or leave the car in the driveway all weekend. The IRS itself knows this. Its medical mileage rate, 20.5 cents, uses only the variable costs from the same study.
For a one-off trip, variable cost is what matters. AAA’s 2025 Your Driving Costs study put fuel at 13 cents a mile when gas averaged $3.151, and maintenance, repairs and tires at 11.04 cents a mile. Scale the fuel piece up to today’s $4.33 and it becomes about 17.9 cents. Add the wear and you land at roughly 29 cents a mile. Your car may do better or worse than AAA’s average sedan, but 29 cents is a fair starting point, and it is much closer to the truth than either 18 cents of gas or 72.5 cents of tax deduction.
Thanksgiving airfare 2026 rose $95 a seat while gas added $34 a car
Here is the comparison the gas headlines skip. Hopper’s 2026 Holiday Travel Index has the average domestic round trip for Thanksgiving at $402, up 31% from $307 last year, as Forbes reported on October 12. Jet fuel has roughly doubled, and airlines are passing that straight through.
Now put the two increases side by side. An average car burns about 34 gallons on an 820-mile round trip, so a gallon that costs a dollar more adds about $34 to the drive. That’s $34 per car. The fare increase is $95 per seat. If you’re flying with a partner, you’re out an extra $190 compared with last year. With two kids it’s $380. Gas went up per vehicle and airfare went up per person, and that difference decides more of this than the price at the pump does.
The fare also isn’t the whole ticket. United raised checked bag fees by $10 each way for tickets bought on or after April 3, 2026, putting a domestic bag at $45 minimum (Thrifty Traveler tracked the change), and Delta and Southwest are at that level too. Someone also has to park at the airport or pay for a ride. Austin’s economy lots went to $14 a day in May. And when you land, somebody is driving to pick you up, or you’re renting a car.
A 410-mile trip shows driving vs flying for Thanksgiving is not close
Say you live in Chicago and Thanksgiving is in Minneapolis, about 410 miles away. That’s 820 miles round trip.
Driving: 820 miles times 29 cents comes to about $237. If you’d only counted gas, you’d have said $146. If you’d used the IRS rate, you’d have said $594.50 and probably booked a flight.
Flying solo at the national average: $402 for the ticket, plus $90 to check one bag each way, plus five days in an economy lot at $14 a day ($70). That’s $562 before anyone picks you up in Minneapolis.
So even traveling alone, the drive saves you about $325. With a partner it isn’t close. Two tickets and two bags each way plus parking come to $1,054, and the car still costs $237 because it doesn’t care how many people are in it. That’s $817 in your pocket, which pays for a lot of pie.
To check your own trip, add your real fare, your bag fees and your parking, then divide by 0.29. The result is the number of round-trip miles where driving and flying cost the same. At $562 that’s about 1,940 miles, or roughly 970 miles each way. Pack carry-on only and drop the bag fees, and the break-even is still around 810 miles each way. For most Thanksgiving trips under 800 miles, driving wins on cost, even solo, even at $4.33 gas.
When flying is still the right call
Flying still wins in a few situations. If your route has a cheap fare well below the $402 average (short, competitive hops often do), plug it into the formula and see. If the drive is more than about eight hours each way, the time cost gets real, and four days of family time minus two travel days is a bad trade. And if the plan is to leave straight from a full Wednesday workday and drive into the night, paying an airline to spare you that is a reasonable use of $325.
Time matters less than you’d think on a 400-mile trip, though. The Chicago to Minneapolis drive takes around six and a half hours. The flight is short, but once you add the trip to O’Hare, security, the wait at the gate and getting out of the airport on the other end, door to door can easily run four hours or more, and one holiday delay wipes out the rest of the gap.
If you drive, time it. If you fly, book this week.
Drivers: the hour you leave matters more than the miles. For last year’s holiday, INRIX told AAA that Tuesday and Wednesday afternoons before Thanksgiving would be the most congested stretches, with Thanksgiving Day itself barely affected (AAA’s 2025 forecast). Leaving Wednesday morning, or on the holiday itself, is the cheapest upgrade you can make. You’ll have company either way: AAA counted 73 million people driving last Thanksgiving, nearly 90% of all travelers.
Flyers: Kayak’s data shows domestic Thanksgiving fares have historically bottomed out about five weeks before the holiday, which this year is the week of October 19. That’s now. Last year fares rose as much as 16% the week before Thanksgiving. If the math above says fly, book today, and if you’re also deciding whose family gets which holiday, our guide to splitting holidays between families does the same dollars-and-hours math on that fight. Flying more than once this season? Our breakdown of TSA PreCheck vs Global Entry is worth five minutes.
On driving vs flying for Thanksgiving, my rule is simple: multiply your round-trip miles by 29 cents, hold that up against the full cost of everyone’s ticket, and let the bigger number lose. This year, for most of us, the bigger number is the airfare.