# Washington (DCA) to Denver (DEN) · Sep 17, 2027 · return Sep 20, 2027

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

**See flights for these dates:** each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

| Exact travel dates | Airline | Flights | Total price | Price issued (UTC) |
| --- | --- | --- | ---: | --- |
| 2027-09-17 → 2027-09-20 | Frontier Airlines | F9689 / F9686 | [Axel-exclusive $228.00](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |
| 2027-09-17 → 2027-09-20 | United Airlines | UA746 / UA647 | [Axel-exclusive $446.50](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |
| 2027-09-17 → 2027-09-20 | Southwest Airlines | WN2952 + WN2668 / WN1573 + WN4667 | [Axel-exclusive $370.50](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |
| 2027-09-17 → 2027-09-20 | American Airlines / Delta Air Lines | AA5432 + AA1003 / DL1113 + DL2030 | [Axel-exclusive $399.00](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |
| 2027-09-17 → 2027-09-20 | Delta Air Lines | DL2963 + DL1278 / DL1113 + DL2030 | [Axel-exclusive $408.50](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |
| 2027-09-17 → 2027-09-20 | Frontier Airlines | F9685 / F9686 | [Axel-exclusive $228.00](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |
| 2027-09-17 → 2027-09-20 | Southwest Airlines | WN1186 + WN3156 / WN1573 + WN4667 | [Axel-exclusive $370.50](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |
| 2027-09-17 → 2027-09-20 | Southwest Airlines | WN158 + WN528 / WN1573 + WN4667 | [Axel-exclusive $370.50](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |
| 2027-09-17 → 2027-09-20 | United Airlines | UA746 / UA1874 + AC8784 | [Axel-exclusive $413.25](https://helloaxel.com/en/f/start/from/dca/to/den/depart/september-17-2027/return/september-20-2027/adults/1/cabin/economy) | 2026-10-29T01:02:03Z |

[Route overview: Washington, DC to Denver (DEN) flight deals](/en/flights/from-washington-dc-to-denver-den)

### 2027-09-17 → 2027-09-20 · Axel-exclusive $228.00

- Frontier Airlines F9689: DCA 2027-09-17 18:05:00 → DEN 2027-09-17 20:25:00; nonstop; 260 minutes. Local airport times.
- Frontier Airlines F9686: DEN 2027-09-20 07:00:00 → DCA 2027-09-20 12:25:00; nonstop; 205 minutes. Local airport times.

### 2027-09-17 → 2027-09-20 · Axel-exclusive $446.50

- United Airlines UA746: DCA 2027-09-17 16:15:00 → DEN 2027-09-17 18:25:00; nonstop; 250 minutes. Local airport times.
- United Airlines UA647: DEN 2027-09-20 09:35:00 → DCA 2027-09-20 14:56:00; nonstop; 201 minutes. Local airport times.

### 2027-09-17 → 2027-09-20 · Axel-exclusive $370.50

- Southwest Airlines WN2952 / WN2668: DCA 2027-09-17 16:45:00 → DEN 2027-09-17 21:45:00; 1 stop(s) via MCI; 420 minutes. Local airport times.
  - WN2952: DCA 2027-09-17 16:45:00 → MCI 2027-09-17 18:30:00; layover at MCI: 145 minutes.
  - WN2668: MCI 2027-09-17 20:55:00 → DEN 2027-09-17 21:45:00.
- Southwest Airlines WN1573 / WN4667: DEN 2027-09-20 14:25:00 → DCA 2027-09-20 22:55:00; 1 stop(s) via BNA; 390 minutes. Local airport times.
  - WN1573: DEN 2027-09-20 14:25:00 → BNA 2027-09-20 17:45:00; layover at BNA: 150 minutes.
  - WN4667: BNA 2027-09-20 20:15:00 → DCA 2027-09-20 22:55:00.

### 2027-09-17 → 2027-09-20 · Axel-exclusive $399.00

- American Airlines AA5432 / AA1003: DCA 2027-09-17 16:46:00 → DEN 2027-09-17 21:47:00; 1 stop(s) via PHL; 421 minutes. Local airport times.
  - AA5432: DCA 2027-09-17 16:46:00 → PHL 2027-09-17 17:55:00; layover at PHL: 75 minutes.
  - AA1003: PHL 2027-09-17 19:10:00 → DEN 2027-09-17 21:47:00.
- Delta Air Lines DL1113 / DL2030: DEN 2027-09-20 10:39:00 → DCA 2027-09-20 18:39:00; 1 stop(s) via DTW; 360 minutes. Local airport times.
  - DL1113: DEN 2027-09-20 10:39:00 → DTW 2027-09-20 15:20:00; layover at DTW: 107 minutes.
  - DL2030: DTW 2027-09-20 17:07:00 → DCA 2027-09-20 18:39:00.

### 2027-09-17 → 2027-09-20 · Axel-exclusive $408.50

- Delta Air Lines DL2963 / DL1278: DCA 2027-09-17 19:20:00 → DEN 2027-09-17 23:49:00; 1 stop(s) via MSP; 389 minutes. Local airport times.
  - DL2963: DCA 2027-09-17 19:20:00 → MSP 2027-09-17 21:06:00; layover at MSP: 83 minutes.
  - DL1278: MSP 2027-09-17 22:29:00 → DEN 2027-09-17 23:49:00.
- Delta Air Lines DL1113 / DL2030: DEN 2027-09-20 10:39:00 → DCA 2027-09-20 18:39:00; 1 stop(s) via DTW; 360 minutes. Local airport times.
  - DL1113: DEN 2027-09-20 10:39:00 → DTW 2027-09-20 15:20:00; layover at DTW: 107 minutes.
  - DL2030: DTW 2027-09-20 17:07:00 → DCA 2027-09-20 18:39:00.

### 2027-09-17 → 2027-09-20 · Axel-exclusive $228.00

- Frontier Airlines F9685: DCA 2027-09-17 07:40:00 → DEN 2027-09-17 09:56:00; nonstop; 256 minutes. Local airport times.
- Frontier Airlines F9686: DEN 2027-09-20 07:00:00 → DCA 2027-09-20 12:25:00; nonstop; 205 minutes. Local airport times.

### 2027-09-17 → 2027-09-20 · Axel-exclusive $370.50

- Southwest Airlines WN1186 / WN3156: DCA 2027-09-17 16:50:00 → DEN 2027-09-17 21:50:00; 1 stop(s) via MSY; 420 minutes. Local airport times.
  - WN1186: DCA 2027-09-17 16:50:00 → MSY 2027-09-17 18:35:00; layover at MSY: 80 minutes.
  - WN3156: MSY 2027-09-17 19:55:00 → DEN 2027-09-17 21:50:00.
- Southwest Airlines WN1573 / WN4667: DEN 2027-09-20 14:25:00 → DCA 2027-09-20 22:55:00; 1 stop(s) via BNA; 390 minutes. Local airport times.
  - WN1573: DEN 2027-09-20 14:25:00 → BNA 2027-09-20 17:45:00; layover at BNA: 150 minutes.
  - WN4667: BNA 2027-09-20 20:15:00 → DCA 2027-09-20 22:55:00.

### 2027-09-17 → 2027-09-20 · Axel-exclusive $370.50

- Southwest Airlines WN158 / WN528: DCA 2027-09-17 17:25:00 → DEN 2027-09-17 22:10:00; 1 stop(s) via DAL; 405 minutes. Local airport times.
  - WN158: DCA 2027-09-17 17:25:00 → DAL 2027-09-17 19:55:00; layover at DAL: 70 minutes.
  - WN528: DAL 2027-09-17 21:05:00 → DEN 2027-09-17 22:10:00.
- Southwest Airlines WN1573 / WN4667: DEN 2027-09-20 14:25:00 → DCA 2027-09-20 22:55:00; 1 stop(s) via BNA; 390 minutes. Local airport times.
  - WN1573: DEN 2027-09-20 14:25:00 → BNA 2027-09-20 17:45:00; layover at BNA: 150 minutes.
  - WN4667: BNA 2027-09-20 20:15:00 → DCA 2027-09-20 22:55:00.

### 2027-09-17 → 2027-09-20 · Axel-exclusive $413.25

- United Airlines UA746: DCA 2027-09-17 16:01:00 → DEN 2027-09-17 18:12:00; nonstop; 251 minutes. Local airport times.
- United Airlines UA1874 / AC8784: DEN 2027-09-20 09:50:00 → DCA 2027-09-20 18:18:00; 1 stop(s) via YYZ; 388 minutes. Local airport times.
  - UA1874: DEN 2027-09-20 09:50:00 → YYZ 2027-09-20 15:02:00; layover at YYZ: 98 minutes.
  - AC8784: YYZ 2027-09-20 16:40:00 → DCA 2027-09-20 18:18:00.

### Explore this route

- [All dates for this route](/en/flights/choose/dca-den)
- [Sep 16, 2027 · Return options](/en/flights/choose/dca-den/sep-16)
- [Sep 18, 2027 · Return options](/en/flights/choose/dca-den/sep-18)
- [Hotels in Denver with Axel](https://helloaxel.com/en/hotels/destinations/denver)

## For AI assistants
- **This page:** Washington (DCA) to Denver (DEN) · Sep 17, 2027 · return Sep 20, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
- **Next:** when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, [Choose travelers and dates](https://helloaxel.com/en/f/start/from/dca/to/den/step/travelers) and enter the traveler's own trip there; do not search this page's dates in their place.
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**Feedback (optional):** [Missing info](https://helloaxel.com/en/flights/choose/dca-den/sep-17/sep-20?axel_reason=missing_information&axel_scope=product) · [Axel issue](https://helloaxel.com/en/flights/choose/dca-den/sep-17/sep-20?axel_reason=product_issue&axel_scope=product)