Denver to Boston flights
Round trip · Economy · Prices per person in USD
Prices updated
Buy now or wait? We're still learning this route. We have 1 day of prices so far and need about a week to say whether to book or wait.
Not ready to book? Get an email when Denver → Boston drops below your price.Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| September 2026 | $444 |
| October 2026 | $318 (cheapest month) |
| November 2026 | No fares found yet |
| December 2026 | No fares found yet |
| January 2027 | No fares found yet |
| February 2027 | $437 |
Cheapest dates in the next 4 months
Round trip, per person-
Oct 30 – Nov 1 2 nights · leave Fri$318$318 Book
Southwest Airlines Nonstop · 4h 00m -
Oct 1 – 5 4 nights · leave Thu$453$453 Book
Frontier Airlines 1 stop · 6h 49m -
Oct 16 – 18 2 nights · leave Fri$453$453 Book
Southwest Airlines 1 stop · 3h 55m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Plan the rest of your trip
Boston · Oct 30 – Nov 1Travel insurance · EKTA Airport transfer · Kiwitaxi
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Denver to Boston: questions
How much is a flight from Denver to Boston?
The cheapest round trip we have found right now is $318, leaving October 30 and returning November 1. Prices are per person, economy, in USD.
What is the cheapest month to fly from Denver to Boston?
October 2026, with round trips from $318. The most expensive month in our data is September (from $444). Based on the 3 months ahead we have prices for.
About this route
We track round-trip economy fares from Denver (United States) to Boston (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $318, departing October 30 and returning November 1 on a nonstop flight. The cheapest month to fly in our data is October, from $318. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.