Denver to Boston flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Denver to Boston is €101 with Frontier Airlines (checked on 5 Nov 2026).
Your next trip, last seen at €101
Lowest observedFrontier Airlines · 2 stops · One wayWhen to fly
Explore datesMore dates worth a look
Last seen for 1 traveller on 6 Nov 2026. Check today's price.
Find the dates that work for you
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
- 1 Jan€140
- 3 Jan€143
- 4 Jan€141
- 11 Jan€142
- 12 Jan€101
- 13 Jan€110
- 14 Jan€147
- 15 Jan€141
- 16 Jan€142
- 19 Jan€101
- 20 Jan€142
- 21 Jan€142
- 22 Jan€142
- 23 Jan€142
- 25 Jan€142
- 26 Jan€101
- 27 Jan€142
- 28 Jan€142
- 29 Jan€122
- 30 Jan€142
- Lowest observed
- €101, departing 12 Jan 2027 (Last checked: 5 Nov 2026)One-way fare · Priced departure days checked in the last 14 days: 76Check live prices for this route
- Round trip
- €256, departing 28 Dec 2026, back 31 Dec 2026 (Last checked: 6 Nov 2026)
- Non-stop, one way
- €135, departing 17 Dec 2026 (Last checked: 6 Nov 2026)
- Airlines seen
- JetBlue, Delta Air Lines, United Airlines, Southwest Airlines, Frontier Airlines
- Fastest observed flight time
- 3h 40m
- Non-stop
- Yes
About this route
Explore the fares we observed from Denver to Boston. Prices move often, so pick your dates to see the latest options.
- Route distance
- 2,841 km
- Fastest observed flight time
- 3h 40m
- Airlines seen
- JetBlue, Delta Air Lines, United Airlines, Southwest Airlines, Frontier Airlines
- Alternative airports
- APA, PSM
Route-level information; individual journeys vary.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days |
|---|---|
| JetBlue | 30 / 75 |
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
- Denver International Airport (DEN) → Denver, city gazetteer reference point (39.7392, -104.9847): ≈ 30 km.
- Portsmouth International Airport at Pease (PSM) → Boston, city gazetteer reference point (42.3584, -71.0598): ≈ 82 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 Denver to Boston: January 2027, from €101 (checked 5 Nov 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €108 | 13 |
| December 2026 | €104 | 31 |
| January 2027 | €101 | 20 |
| February 2027 | €108 | 10 |
Lowest fare by day of the week
Cheapest day of the week from Denver to Boston: Tuesday, from €101 (checked 5 Nov 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €113 | 9 |
| Tuesday | €101 | 13 |
| Wednesday | €104 | 13 |
| Thursday | €104 | 13 |
| Friday | €105 | 12 |
| Saturday | €109 | 9 |
| Sunday | €135 | 7 |
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 Denver to Boston by days until departure (61 days or more): €101 (checked 5 Nov 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €148 | 7 |
| 8 to 30 days | €104 | 15 |
| 31 to 60 days | €105 | 25 |
| 61 days or more | €101 | 29 |
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 Denver to Boston: Frontier Airlines, from €101 (checked 6 Nov 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €101Jan 12, 2027 | 24 |
| JetBlue | €135Dec 17, 2026 | 44 |
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 Denver to Boston?
The lowest fare Routavio has observed is €101, found on 5 Nov 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Denver to Boston?
Cheapest month from Denver to Boston: January 2027, from €101 (checked 5 Nov 2026).
Are there direct flights from Denver to Boston?
Yes. Published schedules report non-stop flights on this route with JetBlue, Delta Air Lines, United Airlines, Southwest Airlines.
Which airlines fly from Denver to Boston?
Routavio has seen these carriers on the route: JetBlue, Delta Air Lines, United Airlines, Southwest Airlines, Frontier Airlines.
How long does the flight from Denver to Boston take?
Across the 68 fares Routavio observed, the average journey time is 8h 48m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Denver to Boston fares were non-stop?
32 of the 70 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
How much is a round trip from Denver to Boston?
Cheapest round trip: €256, departing 28 Dec 2026, back 31 Dec 2026 (checked 6 Nov 2026).
How much is a non-stop flight from Denver to Boston?
Cheapest non-stop one-way fare: €135, departing 17 Dec 2026 (checked 6 Nov 2026).
Which airlines had non-stop offers on at least 3 departure dates from Denver to Boston?
For Denver to Boston, examples of observed one-way non-stop offers checked within the last 14 days: JetBlue (30). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which day of the week is cheapest from Denver to Boston?
Cheapest day of the week from Denver to Boston: Tuesday, from €101 (checked 5 Nov 2026).
Which airline has the lowest fare from Denver to Boston?
Cheapest airline from Denver to Boston: Frontier Airlines, from €101 (checked 6 Nov 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.