Cheap flights from Atlanta to Seattle
The cheapest round trip from Atlanta to Seattle that travelers found recently is $336 with a carry-on: a $336 fare on Southwest, which usually includes a carry-on. It leaves Thu, Dec 31 and comes back Thu, Jan 14.
Live prices for Thu, Dec 31 to Thu, Jan 14
Cheapest trips travelers found recently
| Leave | Return | Airline | Airports | Stops | Fare | Carry-on (est.) | Total | Live prices |
|---|---|---|---|---|---|---|---|---|
| Thu, Dec 31 | Thu, Jan 14 | Southwest | ATL → SEA | 1 stop | $336 | Included | $336 | Live price |
| Thu, Oct 15 | Sun, Oct 18 | Frontier | ATL → SEA | 1 stop | $271 | +$110 | $381 | Live price |
| Tue, Oct 20 | Fri, Oct 23 | Alaska Airlines | ATL → SEA | Nonstop | $435 | Included | $435 | Live price |
Round-trip prices per person, from real fares travelers found in the last few days. Carry-on fees are our estimate for each airline, both ways. Prices change fast: check the live price before you book.
Cheapest month to fly
| Month | Cheapest trip | From | Live prices |
|---|---|---|---|
| October 2026 | Thu, Oct 15 to Sun, Oct 18, 3 nights | $381 | Live price |
| December 2026 | Thu, Dec 31 to Thu, Jan 14, 14 nights | $336 | Live price |
Bag fees on this route
What the airlines flying Atlanta to Seattle usually charge for one bag each way. Budget airlines often sell the cheapest fares and charge the most for bags, so compare the total, not the fare.
| Airline | Carry-on, each way | Checked bag, each way |
|---|---|---|
| Alaska Airlines | Included | $40 |
| Frontier | $55 | $50 |
| Southwest | Included | $35 |
Our estimates: fees depend on the fare type and when you pay. Check the airline's own price when you book.
How these prices work
These are real round-trip fares that travelers found on Aviasales recently, not a live search, so they can change or sell out. Dipt adds an estimate of each airline's carry-on fee, so a cheap fare with expensive bags doesn't look cheaper than it is. "Live price" opens Dipt's live flight search for those dates, where you book with the airline or travel site you pick. Dipt may earn a commission when you book, at no extra cost to you (how Dipt makes money).
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