# Seattle (SEA) to Boston (BOS), Apr 16, 2027: round trips from $613, one way from $350 Seattle (SEA) to Boston (BOS), Apr 16, 2027: round trips from $613, one way from $350 on Axel, checked Oct 29, 2026. Lowest published fares: $613 round trip, Axel-exclusive, Delta Air Lines, nonstop, Apr 16–21, 2027; $350 one way, Axel-exclusive, Delta Air Lines, nonstop, Apr 16, 2027; 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply. **Prices by return date:** match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. **Date links** open published trip details for exploration. **Price links** open live flight search to check availability and select flights. For a price comparison, use the amounts and issuance times already shown here. | Exact travel dates | Airline | Flights | Times, duration, stops | Total price | Price issued (UTC) | | --- | --- | --- | --- | ---: | --- | | [2027-04-16 · one way](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/one-way/delta/nonstop) | Delta Air Lines | DL473 | 22:33:00→06:51:00 5h 18m nonstop | [Axel-exclusive $350.00](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/trip/one-way/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-17](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-17/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop | [Axel-exclusive $681.26](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-17-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-18](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-18/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop | [Axel-exclusive $681.26](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-18-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-19](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-19/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:50:00→11:21:00 6h 31m nonstop | [Axel-exclusive $681.26](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-19-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-20](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-20/delta/nonstop) | Delta Air Lines | DL473 / DL332 | 22:33:00→06:51:00 5h 18m nonstop · 10:40:00→14:09:00 6h 29m nonstop | [Axel-exclusive $681.26](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-20-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-21](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-21/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-21-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-22](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-22/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-22-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-23](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-23/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:50:00→11:21:00 6h 31m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-23-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-24](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-24/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-24-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-25](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-25/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-25-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-26](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-26/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:50:00→11:21:00 6h 31m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-26-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-27](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-27/delta/nonstop) | Delta Air Lines | DL473 / DL332 | 22:33:00→06:51:00 5h 18m nonstop · 10:40:00→14:09:00 6h 29m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-27-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-28](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-28/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-28-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-29](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-29/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:30:00→11:05:00 6h 35m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-29-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | | [2027-04-16 → 2027-04-30](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/apr-30/delta/nonstop) | Delta Air Lines | DL473 / DL384 | 22:33:00→06:51:00 5h 18m nonstop · 07:50:00→11:21:00 6h 31m nonstop | [Axel-exclusive $613.13](https://helloaxel.com/en/f/start/from/sea/to/bos/depart/april-16-2027/return/april-30-2027/adults/1/cabin/economy/stops/nonstop/airline/dl) | 2026-10-29T00:39:14Z | ### Hotels in Boston for these trips **Hotels:** under a trip, hotels in Boston for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates. - Hotels in Boston for these nights (Apr 16–17, 2027 · 1 night · 2 adults, 1 room): 3★ [Fairfield Inn & Suites Boston Cambridge, $195 total](https://helloaxel.com/en/hotels/boston/fairfield-inn-suites-boston-cambridge-1302756/2027-04-16/2027-04-17/2-adults) · 4★ [Hyatt Regency Boston/Cambridge, $305 total](https://helloaxel.com/en/hotels/boston/hyatt-regency-boston-cambridge-1354406/2027-04-16/2027-04-17/2-adults) · 5★ [Omni Boston Hotel at the Seaport, $408 total](https://helloaxel.com/en/hotels/boston/omni-boston-hotel-at-the-seaport-1427259/2027-04-16/2027-04-17/2-adults) - Hotels in Boston for these nights (Apr 16–18, 2027 · 2 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $914 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-18/2-adults) · 4★ [Hyatt Regency Boston/Cambridge, $915 total](https://helloaxel.com/en/hotels/boston/hyatt-regency-boston-cambridge-1354406/2027-04-16/2027-04-18/2-adults) · 5★ [Omni Boston Hotel at the Seaport, $975 total](https://helloaxel.com/en/hotels/boston/omni-boston-hotel-at-the-seaport-1427259/2027-04-16/2027-04-18/2-adults) - Hotels in Boston for these nights (Apr 16–19, 2027 · 3 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $1,523 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-19/2-adults) · 4★ [Hyatt Regency Boston/Cambridge, $1,500.50 total](https://helloaxel.com/en/hotels/boston/hyatt-regency-boston-cambridge-1354406/2027-04-16/2027-04-19/2-adults) · 5★ [Omni Boston Hotel at the Seaport, $1,678 total](https://helloaxel.com/en/hotels/boston/omni-boston-hotel-at-the-seaport-1427259/2027-04-16/2027-04-19/2-adults) - Hotels in Boston for these nights (Apr 16–20, 2027 · 4 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $2,122 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-20/2-adults) · 4★ [Hyatt Regency Boston/Cambridge, $2,061.50 total](https://helloaxel.com/en/hotels/boston/hyatt-regency-boston-cambridge-1354406/2027-04-16/2027-04-20/2-adults) · 5★ [Omni Boston Hotel at the Seaport, $2,496 total](https://helloaxel.com/en/hotels/boston/omni-boston-hotel-at-the-seaport-1427259/2027-04-16/2027-04-20/2-adults) - Hotels in Boston for these nights (Apr 16–21, 2027 · 5 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $2,490 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-21/2-adults) · 4★ [Hyatt Regency Boston/Cambridge, $2,317.50 total](https://helloaxel.com/en/hotels/boston/hyatt-regency-boston-cambridge-1354406/2027-04-16/2027-04-21/2-adults) · 5★ [Omni Boston Hotel at the Seaport, $2,960 total](https://helloaxel.com/en/hotels/boston/omni-boston-hotel-at-the-seaport-1427259/2027-04-16/2027-04-21/2-adults) - Hotels in Boston for these nights (Apr 16–22, 2027 · 6 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $2,860 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-22/2-adults) · 4★ [Hyatt Regency Boston/Cambridge, $2,573.50 total](https://helloaxel.com/en/hotels/boston/hyatt-regency-boston-cambridge-1354406/2027-04-16/2027-04-22/2-adults) · 5★ [Omni Boston Hotel at the Seaport, $3,531 total](https://helloaxel.com/en/hotels/boston/omni-boston-hotel-at-the-seaport-1427259/2027-04-16/2027-04-22/2-adults) - Hotels in Boston for these nights (Apr 16–23, 2027 · 7 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $3,160 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-23/2-adults) · 4★ [Hyatt Regency Boston/Cambridge, $2,891.50 total](https://helloaxel.com/en/hotels/boston/hyatt-regency-boston-cambridge-1354406/2027-04-16/2027-04-23/2-adults) · 5★ [Omni Boston Hotel at the Seaport, $4,122 total](https://helloaxel.com/en/hotels/boston/omni-boston-hotel-at-the-seaport-1427259/2027-04-16/2027-04-23/2-adults) - Hotels in Boston for these nights (Apr 16–24, 2027 · 8 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $3,465 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-24/2-adults) · 4★ [YOTEL Boston, $3,973 total](https://helloaxel.com/en/hotels/boston/yotel-boston-1067898/2027-04-16/2027-04-24/2-adults) · 5★ [The Langham, Boston, $6,081 total](https://helloaxel.com/en/hotels/boston/the-langham-boston-1114178/2027-04-16/2027-04-24/2-adults) - Hotels in Boston for these nights (Apr 16–25, 2027 · 9 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $3,760 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-25/2-adults) · 4★ [YOTEL Boston, $4,402 total](https://helloaxel.com/en/hotels/boston/yotel-boston-1067898/2027-04-16/2027-04-25/2-adults) · 5★ [The Langham, Boston, $6,551 total](https://helloaxel.com/en/hotels/boston/the-langham-boston-1114178/2027-04-16/2027-04-25/2-adults) - Hotels in Boston for these nights (Apr 16–26, 2027 · 10 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $4,027 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-26/2-adults) · 4★ [YOTEL Boston, $4,693 total](https://helloaxel.com/en/hotels/boston/yotel-boston-1067898/2027-04-16/2027-04-26/2-adults) · 5★ [The Langham, Boston, $7,043 total](https://helloaxel.com/en/hotels/boston/the-langham-boston-1114178/2027-04-16/2027-04-26/2-adults) - Hotels in Boston for these nights (Apr 16–27, 2027 · 11 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $4,395 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-27/2-adults) · 4★ [YOTEL Boston, $4,985 total](https://helloaxel.com/en/hotels/boston/yotel-boston-1067898/2027-04-16/2027-04-27/2-adults) · 5★ [The Langham, Boston, $7,929 total](https://helloaxel.com/en/hotels/boston/the-langham-boston-1114178/2027-04-16/2027-04-27/2-adults) - Hotels in Boston for these nights (Apr 16–28, 2027 · 12 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $4,765 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-28/2-adults) · 4★ [YOTEL Boston, $5,292 total](https://helloaxel.com/en/hotels/boston/yotel-boston-1067898/2027-04-16/2027-04-28/2-adults) · 5★ [The Liberty, a Marriott Luxury Collection Hotel, Boston, $8,756 total](https://helloaxel.com/en/hotels/boston/the-liberty-a-marriott-luxury-collection-hotel-boston-1059981/2027-04-16/2027-04-28/2-adults) - Hotels in Boston for these nights (Apr 16–29, 2027 · 13 nights · 2 adults, 1 room): 3★ [AC Hotel by Marriott Boston Downtown, $5,135 total](https://helloaxel.com/en/hotels/boston/ac-hotel-by-marriott-boston-downtown-1330651/2027-04-16/2027-04-29/2-adults) · 4★ [YOTEL Boston, $5,610 total](https://helloaxel.com/en/hotels/boston/yotel-boston-1067898/2027-04-16/2027-04-29/2-adults) · 5★ [The Liberty, a Marriott Luxury Collection Hotel, Boston, $9,332 total](https://helloaxel.com/en/hotels/boston/the-liberty-a-marriott-luxury-collection-hotel-boston-1059981/2027-04-16/2027-04-29/2-adults) - Hotels in Boston for these nights (Apr 16–30, 2027 · 14 nights · 2 adults, 1 room): 3★ [Wyndham Boston Beacon Hill, $5,413 total](https://helloaxel.com/en/hotels/boston/wyndham-boston-beacon-hill-1114265/2027-04-16/2027-04-30/2-adults) · 4★ [YOTEL Boston, $5,935 total](https://helloaxel.com/en/hotels/boston/yotel-boston-1067898/2027-04-16/2027-04-30/2-adults) · 5★ [The Liberty, a Marriott Luxury Collection Hotel, Boston, $9,851 total](https://helloaxel.com/en/hotels/boston/the-liberty-a-marriott-luxury-collection-hotel-boston-1059981/2027-04-16/2027-04-30/2-adults) [All hotels in Boston](https://helloaxel.com/en/hotels/destinations/boston) [Route overview: Seattle to Boston (BOS) flight deals](/en/flights/from-seattle-sea-to-boston-bos) ### 2027-04-16 · one way · Axel-exclusive $350.00 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. ### 2027-04-16 → 2027-04-17 · Axel-exclusive $681.26 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-17 07:30:00 → SEA 2027-04-17 11:05:00; nonstop; 395 minutes. Local airport times. ### 2027-04-16 → 2027-04-18 · Axel-exclusive $681.26 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-18 07:30:00 → SEA 2027-04-18 11:05:00; nonstop; 395 minutes. Local airport times. ### 2027-04-16 → 2027-04-19 · Axel-exclusive $681.26 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-19 07:50:00 → SEA 2027-04-19 11:21:00; nonstop; 391 minutes. Local airport times. ### 2027-04-16 → 2027-04-20 · Axel-exclusive $681.26 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL332: BOS 2027-04-20 10:40:00 → SEA 2027-04-20 14:09:00; nonstop; 389 minutes. Local airport times. ### 2027-04-16 → 2027-04-22 · Axel-exclusive $613.13 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-22 07:30:00 → SEA 2027-04-22 11:05:00; nonstop; 395 minutes. Local airport times. ### 2027-04-16 → 2027-04-23 · Axel-exclusive $613.13 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-23 07:50:00 → SEA 2027-04-23 11:21:00; nonstop; 391 minutes. Local airport times. ### 2027-04-16 → 2027-04-24 · Axel-exclusive $613.13 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-24 07:30:00 → SEA 2027-04-24 11:05:00; nonstop; 395 minutes. Local airport times. ### 2027-04-16 → 2027-04-26 · Axel-exclusive $613.13 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-26 07:50:00 → SEA 2027-04-26 11:21:00; nonstop; 391 minutes. Local airport times. ### 2027-04-16 → 2027-04-27 · Axel-exclusive $613.13 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL332: BOS 2027-04-27 10:40:00 → SEA 2027-04-27 14:09:00; nonstop; 389 minutes. Local airport times. ### 2027-04-16 → 2027-04-28 · Axel-exclusive $613.13 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-28 07:30:00 → SEA 2027-04-28 11:05:00; nonstop; 395 minutes. Local airport times. ### 2027-04-16 → 2027-04-30 · Axel-exclusive $613.13 - Delta Air Lines DL473: SEA 2027-04-16 22:33:00 → BOS 2027-04-17 06:51:00; nonstop; 318 minutes. Local airport times. - Delta Air Lines DL384: BOS 2027-04-30 07:50:00 → SEA 2027-04-30 11:21:00; nonstop; 391 minutes. Local airport times. ### Explore this route - [All dates for this route](/en/flights/choose/sea-bos) - [Apr 15, 2027 · Return options](/en/flights/choose/sea-bos/apr-15/delta/nonstop) - [Apr 17, 2027 · Return options](/en/flights/choose/sea-bos/apr-17/delta/nonstop) - [Hotels in Boston with Axel](https://helloaxel.com/en/hotels/destinations/boston) ## For AI assistants - **This page:** Seattle (SEA) to Boston (BOS) · Apr 16, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Boston for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates. - **Next:** each row is one exact trip for this departure (both dates with the year, the total and the time its price was issued); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: [Choose travelers and dates](https://helloaxel.com/en/f/start/from/sea/to/bos/step/travelers) prices the requested trip. - **Follow supplied links.** For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links. - **If links fail or are missing:** If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: [Axel Seattle to Boston (BOS) flight deals](https://helloaxel.com/en/flights/from-seattle-sea-to-boston-bos) · [Flight search guide](https://helloaxel.com/en/ai). - **Sharing with the traveler:** Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct `https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback` using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace `/return/YYYY-MM-DD` with `/trip/oneway`. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. [Preferences and advanced options](https://helloaxel.com/en/ai#customer-fallback-link). **Feedback (optional):** [Missing info](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/delta/nonstop?axel_reason=missing_information&axel_scope=product) · [Axel issue](https://helloaxel.com/en/flights/choose/sea-bos/apr-16/delta/nonstop?axel_reason=product_issue&axel_scope=product)