Flights Dulles → Denver
As of October 2026, economy flights from Dulles to Denver have a typical range USD 353–719, median USD 398. Full range across all 218 offers: USD 273–2407. We analyzed 218 offers from 6 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Dulles → Denver
Based on 218 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Dulles → Denver
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| United | — | USD 100 | — |
| American Airlines | Included | USD 35 | — |
| United | Included | USD 35 | — |
| Delta | Included | USD 35 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Dulles to Denver cost?
Based on 218 offers · October 2026
Dulles to Denver flights ranged from USD 273 to USD 2407 across 218 offers analyzed in October 2026. The chart below shows how prices distributed across all 218 offers.
These 218 offers (October 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 379 and USD 404
What hidden fees do Dulles to Denver flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Dulles to Denver routes. The breakdown below is based on 218 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| United | 100 | 29% |
| AA | 45 | 12% |
| UA | 36 | 5% |
| DL | 45 | 10% |
United: base ~USD 260 + fees USD 100 = ~USD 360 total. United Airlines: base ~USD 343 + fees USD 36 = ~USD 379 total.
United's USD 100 ancillary fees narrow the gap with United Airlines's lower-fee model — the USD 83 base difference shrinks to USD 19 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.United charges 2.8x more in ancillary fees than UA on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Dulles to Denver?
6 airlines flew Dulles to Denver in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 American | 2 | — | 273 | n/a |
 UA|F9 | 2 | 314–315 | 315 | n/a |
 United | 10 | 333–361 | 360 | 100 (28%) |
 United Airlines | 58 | 379–1702 | 379 | 36 (9%) |
 American Airlines | 75 | 353–404 | 398 | 45 (11%) |
 Delta Air Lines | 71 | 398–458 | 398 | 45 (11%) |
Where do the best Dulles → Denver prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Dulles to Denver flights
- Dulles–Denver had 218 offers analyzed. Median price: USD 398.
- United charges 2.8x more in ancillary fees than UA — USD 100 vs USD 36 avg per booking.
- The same route priced USD 1388 apart depending on where it was booked — the lowest median was USD 314. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Dulles to Denver cost?
- Based on 218 offers analyzed, Dulles to Denver flights range from USD 273 to USD 2407, with a median price of USD 398. Search for your specific dates →
- What hidden fees should I expect on Dulles to Denver flights?
- On average, ancillary fees (bags, seat selection) add USD 45 to the base fare on Dulles to Denver flights. See itemized fees for your itinerary →
- Which airline is cheapest on Dulles to Denver including all fees?
- American has the lowest median fare on Dulles to Denver at USD 273 (median across 2 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Dulles–Denver flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 314. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Dulles to Denver routes?
- Dulles to Denver has 6 airlines competing, creating a price range from USD 273 to USD 2407 across 218 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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