$257+ Cheap flights from Boston (BOS) to Shannon (SNN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SNN
Oct 8 — Oct 151
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Boston to Shannon with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boston Logan Intl to Shannon are usually found in March or January, booked 69 days in advance, depart on a Friday or Sunday and return on a Monday
Cheap flight deals from Boston to Shannon
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to ShannonExplore the most affordable flight options available from Boston to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from Boston to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:30 pm -
Nonstop5h 55m
Sat 10/1711:00 pm -
3 stops27h 45m
Deal found 9/5![Multiple Airlines logo]()
$663
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:13 pm -
2 stops14h 02m
Sun 9/209:30 am -
1 stop11h 57m
Deal found 9/3![United Airlines logo]()
$669
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:41 pm -
1 stop16h 34m
Wed 9/2312:30 pm -
1 stop11h 58m
Deal found 9/7![United Airlines logo]()
$678
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:55 pm -
2 stops16h 35m
Sun 11/12:00 pm -
Nonstop7h 15m
Deal found 9/3![Multiple Airlines logo]()
$679
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:23 am -
2 stops19h 52m
Tue 10/2012:30 pm -
2 stops16h 29m
Deal found 9/7![United Airlines logo]()
$683
This FlightHub deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:50 pm -
Nonstop6h 00m
Fri 12/182:00 pm -
Nonstop7h 15m
Deal found 9/3![Multiple Airlines logo]()
$686
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:30 pm -
2 stops32h 45m
Fri 10/912:30 pm -
2 stops35h 37m
Deal found 9/4![United Airlines logo]()
$693
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:36 pm -
1 stop16h 39m
Tue 10/612:30 pm -
1 stop15h 15m
Deal found 9/7![United Airlines logo]()
$703
This Booking.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:50 pm -
Nonstop6h 00m
Tue 12/82:00 pm -
Nonstop7h 15m
Deal found 9/2![Aer Lingus logo]()
$711
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:15 pm -
2 stops39h 00m
Tue 10/612:30 pm -
1 stop11h 55m
Deal found 9/7![United Airlines logo]()
$719
Best flights from Boston to ShannonDiscover carefully curated flight deals from Boston to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from Boston to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:36 pm -
1 stop16h 39m
Tue 10/2012:30 pm -
1 stop10h 22m
Deal found 9/7![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:00 am -
1 stop23h 15m
Sat 10/2412:30 pm -
1 stop30h 01m
Deal found 9/3![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:41 pm -
1 stop16h 34m
Wed 9/2312:30 pm -
1 stop11h 58m
Deal found 9/6![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:51 am -
1 stop19h 24m
Wed 10/2112:30 pm -
1 stop10h 22m
Deal found 9/7![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:13 pm -
1 stop11h 17m
Mon 9/219:30 am -
1 stop20h 40m
Deal found 9/5![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1610:51 am -
1 stop18h 24m
Fri 10/2312:30 pm -
1 stop11h 55m
Deal found 9/5![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:38 am -
1 stop21h 37m
Sat 10/1012:30 pm -
1 stop26h 14m
Deal found 9/2![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:25 pm -
1 stop8h 50m
Mon 10/1912:30 pm -
1 stop15h 15m
Deal found 9/5![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:36 am -
2 stops18h 39m
Wed 10/2112:30 pm -
1 stop10h 22m
Deal found 9/5![United Airlines logo]()
$683
Last-minute flights from Boston to ShannonDiscover last-minute flight deals from Boston to Shannon. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Shannon. Data last updated September 8, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:13 pm -
2 stops14h 02m
Sun 9/209:30 am -
1 stop11h 57m
Deal found 9/3![United Airlines logo]()
$669
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:41 pm -
1 stop16h 34m
Wed 9/2312:30 pm -
1 stop11h 58m
Deal found 9/7![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:30 pm -
2 stops32h 45m
Fri 10/912:30 pm -
2 stops35h 37m
Deal found 9/4![United Airlines logo]()
$693
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:15 pm -
2 stops39h 00m
Tue 10/612:30 pm -
1 stop11h 55m
Deal found 9/7![United Airlines logo]()
$719
This KAYAK deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:30 pm -
2 stops32h 45m
Fri 10/912:30 pm -
2 stops35h 37m
Deal found 9/2![Lufthansa logo]()
$732
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:36 pm -
1 stop16h 39m
Tue 10/612:30 pm -
1 stop15h 15m
Deal found 9/7![United Airlines logo]()
$703
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:30 pm -
Nonstop5h 55m
Sat 10/1711:00 pm -
3 stops27h 45m
Deal found 9/5![Multiple Airlines logo]()
$663
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:23 am -
2 stops19h 52m
Tue 10/2012:30 pm -
2 stops16h 29m
Deal found 9/7![United Airlines logo]()
$683
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:55 pm -
2 stops16h 35m
Sun 11/12:00 pm -
Nonstop7h 15m
Deal found 9/3![Multiple Airlines logo]()
$679
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:30 pm -
Nonstop5h 55m
Sun 11/17:20 am -
2 stops39h 30m
Deal found 9/4![Multiple Airlines logo]()
$734
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:50 pm -
Nonstop6h 00m
Mon 11/98:10 pm -
2 stops26h 40m
Deal found 9/5![Multiple Airlines logo]()
$733
One-way flights from Boston to ShannonSearch for one-way flight options from Boston to Shannon. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from Boston to Shannon. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:55 pm -
2 stops28h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$257
This Mytrip deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:50 pm -
3 stops21h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$306
This Booking.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/96:50 pm -
Nonstop6h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Aer Lingus logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:00 pm -
3 stops29h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:30 pm -
3 stops39h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$318
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2212:36 pm -
1 stop16h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:50 pm -
Nonstop6h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Aer Lingus logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:50 pm -
3 stops21h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$322
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:36 pm -
1 stop16h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![United Airlines logo]()
$323
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:30 am -
2 stops19h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![United Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/137:50 pm -
3 stops16h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:55 pm -
2 stops37h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$337
Find flight deals from Boston to Shannon
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Shannon (SNN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $663 (Kiwi.com) |
One-way from | $257 (Kiwi.com) |
Popular in | December |
Cheapest in | March |
Average price | $694 |
Good round-trip deal | $711 or less |
Good one-way deal | $524 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Shannon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from Boston to Shannon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Sun 9/27
9:51 am-10:15 am
1 stop19h 24m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$323
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Thu 10/15
9:23 am-10:15 am
2 stops19h 52m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$323
Quickest round-trip
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Tue 10/13
8:25 pm-10:15 am
1 stop8h 50m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$323
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Thu 10/22
7:01 am-10:15 am
2 stops22h 14m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$323
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Sun 10/11
10:51 am-10:15 am
1 stop18h 24m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$323
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Wed 9/30
9:30 am-10:15 am
2 stops19h 45m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$329
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Fri 10/16
11:00 pm-10:35 pm
3 stops18h 35m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$337
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Sat 10/10
5:01 pm-10:15 am
2 stops36h 14m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$340
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Tue 9/22
8:50 pm-8:20 pm
3 stops18h 30m
Shannon
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$344
BostonShannon
BOS Boston Logan Intl - SNN Shannon
BOSSNN
Boston Logan Intl
Tue 10/13
12:36 pm-10:15 am
1 stop16h 39m
Shannon
Tue 10/20
12:30 pm-5:52 pm
1 stop10h 22m
$678
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from Boston to Shannon
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Shannon in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boston-Shannon, Clare flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Shannon, Clare flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Shannon, Clare flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Shannon, Clare flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Shannon, Clare flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to Shannon
Have a flexible travel schedule? Discover the best time to fly to Shannon from Boston with our price prediction graph.
BOS-SNN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Shannon
Prices
Airlines
How far ahead should I book a flight from Boston to Shannon, Clare?
Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Shannon, Clare. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Boston to Shannon, Clare?
Currently, March is the cheapest month in which you can book a flight from Boston to Shannon, Clare (average of $452). Flying from Boston to Shannon, Clare in December is currently the most expensive (average of $905). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BOS to SNN?
Find hourly flight availability from Boston to Shannon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 8, 2026.
When flying from Boston to Shannon, Clare, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Shannon
Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated September 8, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAer Lingus from Boston to Shannon. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Related info for your journey
Find useful and relevant information for your journey from Boston to Shannon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Boston
Popular flights
Shannon flight routes
Alternative routes for Boston to Shannon
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Shannon by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Shannon by cabin class
Find flights from Boston to Shannon, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Shannon flights
Browse other Boston and Shannon flight options. Last updated on September 8, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Shannon
Explore flights to Shannon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.
Top 6 airlines flying from Boston to Shannon
Discover the top 6 airlines that operate flights from Boston to Shannon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$352 | Average$637 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$371 | Average$673 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$396 | Average$660 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$417 | Average$707 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$626 | Average$958 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$827 | Average$1,118 | FlexibilityNo cancel fee | On-time62% |