# Dulles (IAD) to Seattle (SEA) · Jan 21, 2027 · return Jan 31, 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) |
| --- | --- | --- | ---: | --- |
| 2027-01-21 → 2027-01-31 | Alaska Airlines | AS409 / AS737 | [Axel-exclusive $342.00](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | Delta Air Lines | DL1015 / DL541 | [Axel-exclusive $361.00](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | United Airlines | UA2731 / UA672 | [Axel-exclusive $370.50](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | Alaska Airlines | AS737 / AS737 | [Axel-exclusive $342.00](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | United Airlines | UA1128 / UA672 | [Axel-exclusive $370.50](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | Delta Air Lines | DL1015 / DL812 + DL5413 | [Axel-exclusive $346.75](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | Delta Air Lines | DL5511 + DL734 / DL541 | [Axel-exclusive $346.75](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | Delta Air Lines | DL432 + DL2995 / DL541 | [Axel-exclusive $346.75](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | United Airlines | UA565 + UA2099 / UA672 | [Axel-exclusive $351.50](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | United Airlines | UA1128 / UA2601 + UA2087 | [Axel-exclusive $351.50](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |
| 2027-01-21 → 2027-01-31 | United Airlines | UA792 + UA2302 / UA672 | [Axel-exclusive $351.50](https://helloaxel.com/en/f/start/from/iad/to/sea/depart/january-21-2027/return/january-31-2027/adults/1/cabin/economy) | 2026-10-29T01:07:59Z |

[Route overview: Washington, DC to Seattle (SEA) flight deals](/en/flights/from-washington-dc-to-seattle-sea)

### 2027-01-21 → 2027-01-31 · Axel-exclusive $342.00

- Alaska Airlines AS409: IAD 2027-01-21 07:05:00 → SEA 2027-01-21 10:00:00; nonstop; 355 minutes. Local airport times.
- Alaska Airlines AS737: SEA 2027-01-31 08:30:00 → IAD 2027-01-31 16:28:00; nonstop; 298 minutes. Local airport times.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $361.00

- Delta Air Lines DL1015: IAD 2027-01-21 07:00:00 → SEA 2027-01-21 10:10:00; nonstop; 370 minutes. Local airport times.
- Delta Air Lines DL541: SEA 2027-01-31 16:30:00 → IAD 2027-02-01 00:31:00; nonstop; 301 minutes. Local airport times.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $370.50

- United Airlines UA2731: IAD 2027-01-21 08:50:00 → SEA 2027-01-21 11:57:00; nonstop; 367 minutes. Local airport times.
- United Airlines UA672: SEA 2027-01-31 08:09:00 → IAD 2027-01-31 16:08:00; nonstop; 299 minutes. Local airport times.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $342.00

- Alaska Airlines AS737: IAD 2027-01-21 17:18:00 → SEA 2027-01-21 20:27:00; nonstop; 369 minutes. Local airport times.
- Alaska Airlines AS737: SEA 2027-01-31 08:30:00 → IAD 2027-01-31 16:28:00; nonstop; 298 minutes. Local airport times.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $370.50

- United Airlines UA1128: IAD 2027-01-21 17:55:00 → SEA 2027-01-21 21:02:00; nonstop; 367 minutes. Local airport times.
- United Airlines UA672: SEA 2027-01-31 08:09:00 → IAD 2027-01-31 16:08:00; nonstop; 299 minutes. Local airport times.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $346.75

- Delta Air Lines DL1015: IAD 2027-01-21 07:00:00 → SEA 2027-01-21 10:05:00; nonstop; 365 minutes. Local airport times.
- Delta Air Lines DL812 / DL5413: SEA 2027-01-31 06:00:00 → IAD 2027-01-31 16:18:00; 1 stop(s) via DTW; 438 minutes. Local airport times.
  - DL812: SEA 2027-01-31 06:00:00 → DTW 2027-01-31 13:12:00; layover at DTW: 93 minutes.
  - DL5413: DTW 2027-01-31 14:45:00 → IAD 2027-01-31 16:18:00.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $346.75

- Delta Air Lines DL5511 / DL734: IAD 2027-01-21 06:00:00 → SEA 2027-01-21 11:09:00; 1 stop(s) via DTW; 489 minutes. Local airport times.
  - DL5511: IAD 2027-01-21 06:00:00 → DTW 2027-01-21 07:46:00; layover at DTW: 69 minutes.
  - DL734: DTW 2027-01-21 08:55:00 → SEA 2027-01-21 11:09:00.
- Delta Air Lines DL541: SEA 2027-01-31 16:30:00 → IAD 2027-02-01 00:31:00; nonstop; 301 minutes. Local airport times.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $346.75

- Delta Air Lines DL432 / DL2995: IAD 2027-01-21 07:00:00 → SEA 2027-01-21 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
  - DL432: IAD 2027-01-21 07:00:00 → SLC 2027-01-21 09:54:00; layover at SLC: 81 minutes.
  - DL2995: SLC 2027-01-21 11:15:00 → SEA 2027-01-21 12:36:00.
- Delta Air Lines DL541: SEA 2027-01-31 16:30:00 → IAD 2027-02-01 00:31:00; nonstop; 301 minutes. Local airport times.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $351.50

- United Airlines UA565 / UA2099: IAD 2027-01-21 06:10:00 → SEA 2027-01-21 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
  - UA565: IAD 2027-01-21 06:10:00 → ORD 2027-01-21 07:32:00; layover at ORD: 113 minutes.
  - UA2099: ORD 2027-01-21 09:25:00 → SEA 2027-01-21 12:19:00.
- United Airlines UA672: SEA 2027-01-31 08:09:00 → IAD 2027-01-31 16:08:00; nonstop; 299 minutes. Local airport times.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $351.50

- United Airlines UA1128: IAD 2027-01-21 17:55:00 → SEA 2027-01-21 21:01:00; nonstop; 366 minutes. Local airport times.
- United Airlines UA2601 / UA2087: SEA 2027-01-31 05:00:00 → IAD 2027-01-31 15:44:00; 1 stop(s) via DEN; 464 minutes. Local airport times.
  - UA2601: SEA 2027-01-31 05:00:00 → DEN 2027-01-31 08:41:00; layover at DEN: 99 minutes.
  - UA2087: DEN 2027-01-31 10:20:00 → IAD 2027-01-31 15:44:00.

### 2027-01-21 → 2027-01-31 · Axel-exclusive $351.50

- United Airlines UA792 / UA2302: IAD 2027-01-21 08:15:00 → SEA 2027-01-21 13:35:00; 1 stop(s) via DEN; 500 minutes. Local airport times.
  - UA792: IAD 2027-01-21 08:15:00 → DEN 2027-01-21 10:27:00; layover at DEN: 63 minutes.
  - UA2302: DEN 2027-01-21 11:30:00 → SEA 2027-01-21 13:35:00.
- United Airlines UA672: SEA 2027-01-31 08:09:00 → IAD 2027-01-31 16:08:00; nonstop; 299 minutes. Local airport times.

### Explore this route

- [All dates for this route](/en/flights/choose/iad-sea)
- [Jan 20, 2027 · Return options](/en/flights/choose/iad-sea/jan-20)
- [Jan 22, 2027 · Return options](/en/flights/choose/iad-sea/jan-22)
- [Hotels in Seattle with Axel](https://helloaxel.com/en/hotels/destinations/seattle)

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**Feedback (optional):** [Missing info](https://helloaxel.com/en/flights/choose/iad-sea/jan-21/jan-31?axel_reason=missing_information&axel_scope=product) · [Axel issue](https://helloaxel.com/en/flights/choose/iad-sea/jan-21/jan-31?axel_reason=product_issue&axel_scope=product)