Your next trip, last seen at €158
Below averageAllegiant Air · 3 stops · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €158, departing 7 Dec 2026 (Last checked: 22 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 85Check live prices for this route
- Airlines seen
- Alaska Airlines, Air Canada, Allegiant Air, American Airlines, Breeze Airways, Delta Air Lines, Frontier Airlines, JetBlue, Southern Airways Express, Southwest Airlines, United Airlines (11)
- Typical journey time
- 8h 49m
About this route
Explore the fares we observed from Pittsburgh to Seattle. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,432 km
- Typical journey time
- 8h 49m
- Alternative airports
- AGC, BFI
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days | Fastest non-stop |
|---|---|---|
| Alaska Airlines | 15 / 83 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- Pittsburgh International Airport (PIT) → Pittsburgh, city gazetteer reference point (40.4406, -79.9959): ≈ 21 km.
- King County International Airport - Boeing Field (BFI) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 9 km.
- Seattle–Tacoma International Airport (SEA) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 18 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Pittsburgh to Seattle: December 2026, from €158 (checked 22 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| October 2026 | €308 | 3 |
| November 2026 | €178 | 29 |
| December 2026 | €158 | 31 |
| January 2027 | €160 | 22 |
Lowest fare by day of the week
Cheapest day of the week from Pittsburgh to Seattle: Monday, from €158 (checked 22 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €158 | 12 |
| Tuesday | €173 | 12 |
| Wednesday | €171 | 12 |
| Thursday | €169 | 13 |
| Friday | €198 | 13 |
| Saturday | €185 | 12 |
| Sunday | €175 | 11 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Pittsburgh to Seattle by days until departure (31 to 60 days): €158 (checked 22 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €293 | 8 |
| 8 to 30 days | €178 | 23 |
| 31 to 60 days | €158 | 29 |
| 61 days or more | €160 | 25 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from Pittsburgh to Seattle: Allegiant Air, from €158 (checked 22 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Allegiant Air | €158Dec 7, 2026 | 7 |
| JetBlue | €171Dec 9, 2026 | 5 |
| Frontier Airlines | €173Jan 12, 2027 | 25 |
| United Airlines | €185Nov 14, 2026 | 23 |
| Alaska Airlines | €189Dec 16, 2026 | 17 |
| Breeze Airways | €208Jan 10, 2027 | 5 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Pittsburgh to Seattle?
The lowest fare Routavio has observed is €158, found on 22 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Pittsburgh to Seattle?
Cheapest month from Pittsburgh to Seattle: December 2026, from €158 (checked 22 Oct 2026).
Are there direct flights from Pittsburgh to Seattle?
Our data holds no non-stop flight from Pittsburgh to Seattle. The fares on this page include at least one stop.
Which airlines fly from Pittsburgh to Seattle?
Routavio has seen these carriers on the route: Alaska Airlines, Air Canada, Allegiant Air, American Airlines, Breeze Airways, Delta Air Lines, Frontier Airlines, JetBlue, Southern Airways Express, Southwest Airlines, United Airlines (11).
How long does the flight from Pittsburgh to Seattle take?
Across the 91 fares Routavio observed, the average journey time is 20h 32m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
Which airlines had non-stop offers on at least 3 departure dates from Pittsburgh to Seattle?
For Pittsburgh to Seattle, examples of observed one-way non-stop offers checked within the last 14 days: Alaska Airlines (15). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which day of the week is cheapest from Pittsburgh to Seattle?
Cheapest day of the week from Pittsburgh to Seattle: Monday, from €158 (checked 22 Oct 2026).
Which airline has the lowest fare from Pittsburgh to Seattle?
Cheapest airline from Pittsburgh to Seattle: Allegiant Air, from €158 (checked 22 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 26 Oct 2026