Seattle → Denver flights

Seattle (BFI, SEA)→Denver (APA, DEN)
from€172

Last observed price · Last checked: 24 Aug 2026 · Price may change

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Short answer

Frontier Airlines flies Seattle to Denver non-stop. The lowest fare our own searches returned is €172, seen on 24 Aug 2026. October 2026 is the cheapest month in our observations, at €172. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.

Selected search
Last checked: 24 Aug 2026 · Price may change
€172
Wed 14 Oct 2026 → Sat 17 Oct 2026
Frontier Airlines1 stop3 nights
Cheapest
Last checked: 24 Aug 2026 · Price may change
€172 lowest5h 19m fastest
Options found on this date
FAFrontier Airlines20:00 · 1 stop€172
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Tickets found in the last 7 days

The lowest fares our queries caught, cheapest first.

FA€172Cheapest14 Oct 2026 → 17 Oct 2026Frontier Airlines · 1 stop · 20:00Last checked: 24 Aug 2026 · Price may change3 nightsView ticket →

Starting prices by month

The lowest fare our queries observed in each month. Open a month to see its days; click a day with no price and we will search it for you.

Observed priceLowest monthno price observedLast checked: 24 Aug 2026
Seattle → DenverWed 14 Oct 2026 · €172
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Route facts

Direct flights
Non-stop
BFI - APA, 5h 19m
Airlines seen
1
Frontier Airlines
Cheapest month
October 2026
€172
Typical duration
5h 19m
Alternative airports
2
SEA, DEN

Frequently asked

Are there direct flights from Seattle to Denver?+

Yes. We have seen non-stop flights on this route, flown by Frontier Airlines.

How much is a flight from Seattle to Denver?+

The lowest fare we have observed is €172, found on 24 Aug 2026. Prices move, so read it as a floor rather than a quote.

Which airlines fly from Seattle to Denver?+

These are the carriers we have seen on the route: Frontier Airlines.

When is the cheapest month to fly from Seattle to Denver?+

In our observations October 2026 is the cheapest month so far, at €172.

Similar routes

Seattle → Istanbul€576St Louis → Denver€141Seattle → Beijing€596Dallas → Denver€69Seattle → Atlanta€198Minneapolis → Denver€125Seattle → New York€283San Diego → Denver€72

More routes from Seattle

Seattle → Istanbul€576Seattle → Beijing€596Seattle → Atlanta€198Seattle → New York€283Seattle → Los Angeles€73Seattle → San Francisco€121Seattle → Dallas€348Seattle → Ontario€124Seattle → Tokyo€740Seattle → Las Vegas€118Seattle → Phoenix€290Seattle → Calgary€173Seattle → Vancouver€241Seattle → Seoul€777Seattle → Frankfurt€795Seattle → AlanyaSeattle → DohaSeattle → London€482Seattle → Paris€393Seattle → Reykjavik€550Seattle → Dubai€670Seattle → Edmonton€304Seattle → Guadalajara€518Seattle → Mexico City€276Seattle → Bangkok€695Seattle → Taipei€641Seattle → Moscow€1,022Seattle → Toronto€246Seattle → Manila€353Seattle → Cancun€507

More routes to Denver

St Louis → Denver€141Dallas → Denver€69Minneapolis → Denver€125San Diego → Denver€72San Antonio → Denver€214Phoenix → Denver€139Portland → Denver€211Salt Lake City → Denver€264Cancun → Denver€217Cleveland → Denver€142London → Denver€816Munich → DenverRegina → Denver€298Vancouver → Denver€500San Juan → Denver€270Paris → Denver€581Montreal → Denver€445Guadalajara → DenverCalgary → Denver€310Frankfurt → DenverOttawa → Denver€614Istanbul → Denver€705Quebec → Denver€508Zurich → Denver€775Guatemala City → Denver€497

Last checked: 24 Aug 2026