Cheapest€149.41
- Delta Air Lines DA603106:142h 52m09:06Phoenix PHXSeattle BFI
Door to door 6h 2mCO2 454.4 kgChanges 0Fixed, no changes
Phoenix to Seattle flight
Flights from Phoenix to Seattle start at €158.85 and take 5h 54m at their fastest.
The Flights from Phoenix to Seattle starts at €158.85 and takes 5h 54m door to door, run by 6 operators over 1,847 km, with around 48 departures a day. Fares bottom out about 60 days before departure.
- 5h 54mDoor to door
- 2h 44mMoving
- €158.85From
- 454.4 kgCO2
The cheapest and the fastest on September 29, 2026
Two journeys we can sell today, with the service number each operator files them under.
Fastest€205.46
- SkyWest SW226420:152h 44m22:59Phoenix PHXSeattle SEA
Door to door 5h 54mCO2 454.4 kgChanges 0Fixed, no changes
Airlines
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From |
|---|---|
 American Airlines | €151.77 |
 Alaska Airlines | €151.18 |
 Delta Air Lines | €149.41 |
 Frontier Airlines | €150.00 |
 SkyWest | €150.59 |
 Southwest Airlines | €161.80 |
That is the traveling done. What happens after you walk out into Seattle is not something we sell.
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When to book Phoenix to Seattle
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €143.5190 days
- €130.5360 days
- €151.1845 days
- €145.8730 days
- €158.2621 days
- €158.8514 days
- €187.767 days
- €288.063 days
- €359.451 days
- Cheapest lead time
- Fares bottom out around 60 days ahead, at €130.53.
- How much it moves
- The gap between the cheapest and most expensive lead time is 175 percent. The most expensive point is €359.45, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 60 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €206.64Sun
- €178.32Mon
- €175.96Tue
- €158.85Wed
- €236.73Thu
- €216.08Fri
- €222.57Sat
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Phoenix
Air
- PHX
Seattle
Air
- SEA
- BFI
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- How far it really runs
- The route covers 1,847 km against 1,794 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- First and last departure
- The first service of the day leaves Phoenix at 06:14 and the last at 20:51, across 48 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Phoenix to Seattle
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Phoenix to Seattle take?
The Flight from Phoenix to Seattle takes 5h 54m door to door, of which 2h 44m is spent moving. The route runs 1,847 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Phoenix to Seattle cost?
The Flight from Phoenix to Seattle starts at €158.85 for one passenger, checked on September 29, 2026. A typical fare is €180.68. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Phoenix to Seattle?
6 operators run the Flight from Phoenix to Seattle: American Airlines, Alaska Airlines, Delta Air Lines, Frontier Airlines, SkyWest. Between them they file around 48 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Phoenix to Seattle use?
The Flight from Phoenix to Seattle leaves from Phoenix PHX and arrives at Seattle SEA. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Phoenix to Seattle?
Fares for the Flight from Phoenix to Seattle bottom out around 60 days ahead, at €130.53. The gap between the cheapest and most expensive lead time across the window is 175 percent, measured on September 29, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Phoenix to Seattle produce?
The Flight from Phoenix to Seattle produces about 454.4 kg of CO2 per passenger over 1847 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Phoenix to Seattle on September 9, 2026: 1847 km of route against 1794 km in a straight line, 48 services a day, 6 operators, a cheapest fare of €158.85, and 5h 54m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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