Cheapest€135.84
- Delta Air Lines DA659706:142h 44m08:58Seattle SEADenver DEN
Door to door 5h 54mCO2 415.7 kgChanges 0Fixed, no changes
Traveling from Seattle to Denver costs €135.84 at the cheapest and takes 5h 42m door to door at the fastest, across 1 mode and 5 operators. The route covers 1,690 km. Cheapest is by Flight, fastest is by Flight.
At a glance
- Distance
- 1,690 km
- Fastest
- 5h 42m
- Average
- 5h 52m
- Services per day
- 40
- Cheapest
- €135.84
- CO2 per passenger
- 415.7 kg
Every way to make this journey
Journey times below are door to door, so they include getting to the terminal and away from it at the other end. Fares are the cheapest we currently sell on September 29, 2026.
| Mode | Door to door | Moving | At the ends | From | CO2 | Per day |
|---|---|---|---|---|---|---|
| Flight | 5h 42m | 2h 32m | 3h 10m | €161.21 | 415.7 kg | 40 |
- 5h 42mFastest, by Flight
- €161.21Cheapest, by Flight
- 415.7 kgLowest CO2, by Flight
- 1,690 kmDistance traveled
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€198.97
- United Airlines UA550514:382h 32m17:10Seattle SEADenver DEN
Door to door 5h 42mCO2 415.7 kgChanges 0Fixed, no changes
Today's real departures
Live from the operators' own published timetables, through the open transit feeds they publish. Times and services are real. Fares are modeled until our booking connectors are live.
| Operator | Service | Departs | Arrives | Takes |
|---|---|---|---|---|
| Metro Transit1 changes | 101 | 14:35 | 19:05 | 28h 39m |
| Metro Transit1 changes | 101 | 14:35 | 19:05 | 28h 39m |
| Greyhound-usdirect | Greyhound US0550 | 14:45 | 19:05 | 28h 38m |
| Metro Transit1 changes | C Line | 14:33 | 19:05 | 28h 35m |
| Greyhound-usdirect | Greyhound US0550 | 14:45 | 19:05 | 28h 38m |
| Metro Transit1 changes | C Line | 14:34 | 19:05 | 28h 34m |
Prices over the next three weeks
Live from our own engine, refreshed on every request. The cheapest days for each way of traveling are marked.
| Cheapest fare by mode and day for Seattle to Denver | FriSep 11 | SatSep 12 | SunSep 13 | MonSep 14 | TueSep 15 | WedSep 16 | ThuSep 17 | FriSep 18 | SatSep 19 | SunSep 20 | MonSep 21 | TueSep 22 | WedSep 23 | ThuSep 24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flight | €304.58 | €326.41 | €237.32 | €205.46 | €198.97 | €214.90 | €219.62 | €198.38 | €205.46 | €196.61 | €168.29 | €161.21 | €180.09 | €181.86 |
Cheapest day: 2026-09-29 · €135.84
That is the traveling done. What happens after you walk out into Denver is not something we sell.
Looking for somewhere to stay in Denver?
The search opens on Denver with your nights already filled in, so it is one step to a real price.
Search Denver on Booking.comOr compare on Expedia
Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book Seattle to Denver
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €139.9790 days
- €106.3460 days
- €131.1245 days
- €137.6130 days
- €166.5221 days
- €181.8614 days
- €219.627 days
- €237.323 days
- €304.581 days
- Cheapest lead time
- Fares bottom out around 60 days ahead, at €106.34.
- How much it moves
- The gap between the cheapest and most expensive lead time is 186 percent. The most expensive point is €304.58, 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.
Book now Fares on this route are lowest around 60 days ahead. You are inside that window.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €196.61Sun
- €168.29Mon
- €161.21Tue
- €180.09Wed
- €181.86Thu
- €198.38Fri
- €205.46Sat
How the fare moves month by month
The same journey priced on the fifteenth of each of the next six months.
- €198.97Sep
- €146.46Oct
- €128.17Nov
- €130.53Dec
- €126.40Jan
- €108.70Feb
The route
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 1,690 km against 1,641 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 Seattle at 06:14 and the last at 20:53, across 40 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Seattle
Rail
- Seattle King Street
- Westlake
- Union Station
Bus
- Seattle King Street
- Seattle Greyhound Station
Air
- SEA
- BFI
Ferry
- Seattle
- Seattle Waterfront
Denver
Rail
- 38th & Blake
- Union Station
- Moffat Station
Bus
- Civic Center Station
- Union Station Bus Concourse
Air
- DEN
Who runs this route
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From |
|---|---|
 Alaska Airlines | €138.20 |
 Delta Air Lines | €135.84 |
 Frontier Airlines | €140.56 |
 Southwest Airlines | €142.92 |
| United Airlines | €136.43 |
What the fare is made of
Every part of the total, so the number at checkout is the number here.
| Part | Amount | Share |
|---|---|---|
| Operator fare | €107.50 | 79% |
| Taxes | €19.35 | 14% |
| Supplier fees | €7.00 | 5% |
| Our service fee | €1.99 | 1% |
| Total you pay | €135.84 | 100% |
The flight gets in hours before any room is ready. Holding a bag is not what we sell.
Somewhere to drop the bags in Denver?
Stores, cafes and hotels that take luggage, with the hours on the map so you know what is still open when you come back.
Check Denver on StasherOr try Bounce
Partner links. We do not run these networks. We earn a commission on a booking, and the price is the same as going direct.
Questions about Seattle to Denver
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 it take to get from Seattle to Denver?
The fastest journey from Seattle to Denver takes 5h 42m door to door, of which 2h 32m is spent moving, on the Flight. Most services take around 5h 52m, because that average includes slower stopping services and journeys with a connection. Times include reaching the terminal and leaving it at the far end.
How much does it cost to travel from Seattle to Denver?
The cheapest fare from Seattle to Denver is €135.84, checked on September 29, 2026. A typical fare across the next three weeks is €227.88. Both figures are the total for one passenger, including taxes, supplier fees and our service fee, so nothing is added at checkout.
What is the cheapest way to get from Seattle to Denver?
The cheapest way from Seattle to Denver is by Flight, at €161.21 for one passenger on September 29, 2026. That journey takes 5h 42m door to door. Cheaper is rarely faster on this corridor, and the comparison table on this page shows what each mode costs against what it saves.
When should I book Seattle to Denver?
Fares from Seattle to Denver bottom out around 60 days before departure, at €106.34. Across the whole booking window the gap between the cheapest and the most expensive lead time is 186 percent, measured on September 29, 2026. Booking inside the last week has consistently cost more on this corridor.
Which day of the week is cheapest for Seattle to Denver?
Tuesday is the cheapest day to depart from Seattle to Denver, at €161.21. That is the median of 21 priced departure days across the next three weeks, checked on September 29, 2026. Shifting a departure by one day is usually worth more than shifting the booking by one week.
Which month is cheapest for Seattle to Denver?
February is the cheapest of the next 6 months to travel from Seattle to Denver, at €108.70 for one passenger. Each month is priced on its fifteenth, so the comparison is like for like rather than a mix of weekends and midweek departures.
Who runs service from Seattle to Denver?
5 operators sell services from Seattle to Denver across 1 modes: Alaska Airlines, Delta Air Lines, Frontier Airlines, Southwest Airlines, United Airlines. Journey times, fares and fare conditions differ between them, and the operator table on this page compares all of them on speed, flexibility and what is provided on board.
Is there a direct service from Seattle to Denver?
Every service we sell from Seattle to Denver is direct, with around 40 departures a day and a fastest journey of 5h 42m door to door. No connection is needed, so there is no missed connection risk to plan around on this corridor.
Which station or terminal do services from Seattle to Denver use?
Services from Seattle to Denver by Flight leave from Seattle SEA and arrive at Denver DEN. Allow about 3h 10m in total for reaching the departure terminal and leaving the arrival one, which is already included in every door to door time on this page.
Can I change or refund a ticket from Seattle to Denver?
0 of the 5 operators we sell from Seattle to Denver allow a change or a refund. A change on a changeable fare costs €5.00. The operator table on this page names which is which, and the condition is shown again before you pay.
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, Distances
- On this page
- Every figure above was computed for Seattle to Denver on September 10, 2026: 1690 km of route against 1641 km in a straight line, 40 services a day, 5 operators, a cheapest fare of €135.84, and 5h 42m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
Our job ends at the platform. What fills the days in Denver afterward does not belong to us.
Anything to book in Denver before you go?
Day trips that leave Denver in the morning and cover a good part of United States by evening.
See Denver on GetYourGuideOr browse Viator
Partner links. We do not sell tours or tickets. We earn a commission on a booking, and it never changes the price.
Other ways to make this journey
Arriving in Denver
Leaving Denver
- 182Places you can leave for
- 10Countries
- 30Operators
Plan a trip from here
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