$95+ Cheap flights from Key Largo, FL to Boston (BOS)
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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BOS
Oct 14 — Oct 211
Round-trip
1 adult, Economy
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Find cheap flights from Key Largo to Boston 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 Key Largo to Boston Logan Intl are usually found in January or February, booked 47 days in advance, depart on a Friday or Thursday and return on a Thursday
Cheap flight deals from Key Largo to Boston
Cheapest
Best
Last-minute
One-way
Cheapest flights from Key Largo to BostonExplore the most affordable flight options available from Key Largo to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
Explore the most affordable flight options available from Key Largo to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 11/610:55 pm -
1 stop11h 37m
Mon 11/912:39 pm -
1 stop9h 10m
Deal found 9/11![Frontier logo]()
$207
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:59 pm -
Nonstop3h 34m
Sat 10/314:15 pm -
1 stop8h 38m
Deal found 9/13![Delta logo]()
$209
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/711:25 am -
1 stop6h 27m
Mon 10/126:00 am -
1 stop6h 13m
Deal found 9/13![United Airlines logo]()
$214
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:40 pm -
Nonstop3h 19m
Sat 10/176:30 pm -
Nonstop3h 35m
Deal found 9/10![American Airlines logo]()
$218
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:59 pm -
Nonstop3h 34m
Sat 10/173:33 pm -
Nonstop3h 31m
Deal found 9/10![Delta logo]()
$219
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:30 am -
1 stop8h 00m
Wed 12/93:30 pm -
1 stop5h 25m
Deal found 9/14![Southwest logo]()
$223
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:05 pm -
1 stop5h 05m
Mon 10/265:15 am -
1 stop10h 15m
Deal found 9/12![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:35 am -
1 stop7h 30m
Tue 12/81:20 pm -
2 stops8h 50m
Deal found 9/14![Southwest logo]()
$228
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 am -
1 stop9h 45m
Mon 10/265:15 am -
1 stop10h 15m
Deal found 9/12![Southwest logo]()
$230
This CheapOair deal was found by Cheapflights users on 9/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:05 am -
1 stop6h 39m
Sun 11/229:25 am -
1 stop22h 49m
Deal found 9/9![Frontier logo]()
$234
Best flights from Key Largo to BostonDiscover carefully curated flight deals from Key Largo to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
Discover carefully curated flight deals from Key Largo to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:50 am -
2 stops9h 30m
Tue 10/271:05 pm -
2 stops9h 10m
Deal found 9/13![Southwest logo]()
$233
This Delta deal was found by Cheapflights users on 9/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:16 am -
1 stop7h 33m
Sun 10/257:15 am -
Nonstop3h 37m
Deal found 9/12![Delta logo]()
$249
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/44:39 pm -
1 stop5h 20m
Sat 11/77:30 am -
2 stops11h 20m
Deal found 9/9![United Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:09 am -
Nonstop3h 24m
Mon 11/92:55 pm -
1 stop7h 27m
Deal found 9/13![Delta logo]()
$249
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:06 am -
1 stop7h 36m
Wed 10/73:33 pm -
Nonstop3h 31m
Deal found 9/9![Delta logo]()
$259
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/611:09 am -
Nonstop3h 24m
Sun 10/117:00 am -
Nonstop3h 32m
Deal found 9/10![Delta logo]()
$280
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/1612:26 pm -
2 stops10h 19m
Mon 10/197:00 pm -
1 stop5h 25m
Deal found 9/13![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:30 pm -
1 stop7h 38m
Mon 10/126:00 am -
1 stop8h 30m
Deal found 9/14![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/234:01 pm -
1 stop8h 53m
Mon 10/265:30 am -
2 stops10h 56m
Deal found 9/13![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 9/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:45 pm -
1 stop5h 44m
Sun 11/17:15 am -
Nonstop3h 37m
Deal found 9/12![Delta logo]()
$340
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/97:00 am -
1 stop7h 35m
Mon 10/126:00 am -
1 stop6h 13m
Deal found 9/11![United Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:30 pm -
Nonstop3h 26m
Sun 10/47:10 am -
Nonstop3h 33m
Deal found 9/13![Delta logo]()
$455
Last-minute flights from Key Largo to BostonDiscover last-minute flight deals from Key Largo to Boston. Data last updated September 14, 2026 and is based on user searches.
Discover last-minute flight deals from Key Largo to Boston. Data last updated September 14, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:15 am -
1 stop12h 24m
Tue 10/137:15 am -
Nonstop3h 37m
Deal found 9/9![Delta logo]()
$241
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/611:25 am -
1 stop6h 27m
Tue 10/138:05 am -
1 stop6h 54m
Deal found 9/13![United Airlines logo]()
$233
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:40 pm -
Nonstop3h 19m
Sat 10/1011:21 am -
1 stop7h 01m
Deal found 9/9![American Airlines logo]()
$238
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/711:25 am -
1 stop6h 27m
Mon 10/126:00 am -
1 stop6h 13m
Deal found 9/13![United Airlines logo]()
$214
This Delta deal was found by Cheapflights users on 9/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:25 pm -
Nonstop3h 27m
Mon 10/127:15 am -
Nonstop3h 37m
Deal found 9/12![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:59 pm -
Nonstop3h 34m
Sat 10/173:33 pm -
Nonstop3h 31m
Deal found 9/10![Delta logo]()
$219
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:40 pm -
Nonstop3h 19m
Sat 10/176:30 pm -
Nonstop3h 35m
Deal found 9/10![American Airlines logo]()
$218
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 am -
2 stops7h 55m
Tue 10/205:35 am -
1 stop5h 15m
Deal found 9/14![Southwest logo]()
$228
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:05 pm -
1 stop5h 05m
Mon 10/265:15 am -
1 stop10h 15m
Deal found 9/12![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 am -
1 stop9h 45m
Mon 10/265:15 am -
1 stop10h 15m
Deal found 9/12![Southwest logo]()
$230
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:59 pm -
Nonstop3h 34m
Sat 10/314:15 pm -
1 stop8h 38m
Deal found 9/13![Delta logo]()
$209
One-way flights from Key Largo to BostonSearch for one-way flight options from Key Largo to Boston. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
Search for one-way flight options from Key Largo to Boston. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:50 am -
2 stops9h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Southwest logo]()
$95
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/711:25 am -
1 stop6h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/137:25 am -
2 stops28h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$131
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/212:40 pm -
1 stop9h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$134
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/206:00 am -
2 stops8h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 10/315:05 am -
2 stops28h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$137
This Frontier deal was found by Cheapflights users on 9/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:05 am -
1 stop6h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 11/510:55 pm -
2 stops34h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$143
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:22 am -
1 stop6h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 11/27:40 am -
2 stops27h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$145
Find flight deals from Key Largo to Boston
Keep the following information in mind while searching for Key Largo to Boston flight deals. Data was last updated September 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $207 (Kiwi.com) |
One-way from | $95 (Southwest) |
Popular in | June |
Cheapest in | January |
Average price | $334 |
Cheapflights Fare Finder
Customize your flight search to find flights from Key Largo to Boston 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 14, 2026.
Use the filters below to find and compare flights from Key Largo to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Wed 11/11
11:16 am-5:27 pm
1 stop6h 11m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$130
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Tue 11/10
4:20 pm-9:50 pm
1 stop5h 30m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$135
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Tue 10/20
6:00 am-2:55 pm
2 stops8h 55m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$135
Quickest round-trip
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Fri 10/9
7:25 pm-10:52 pm
Nonstop3h 27m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$160
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Thu 11/5
11:16 am-5:27 pm
1 stop6h 11m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$170
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Wed 10/14
6:00 am-2:55 pm
2 stops8h 55m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$180
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Fri 11/27
7:59 pm-11:27 pm
Nonstop3h 28m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$204
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Sat 11/14
8:45 am-9:59 pm
3 stops13h 14m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$204
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Tue 11/17
8:45 am-11:59 pm
3 stops15h 14m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$204
MiamiBoston
MIA Miami - BOS Boston Logan Intl
MIABOS
Miami
Thu 10/8
7:59 pm-11:33 pm
Nonstop3h 34m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$214
Showing 1-10 of 24 resultsSorted by cheapest first
Best time to book a flight from Key Largo to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Key Largo with our price prediction graph.
MIA-BOS
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 Key Largo to Boston
KE9-BOS
MIA-BOS
What is the cheapest time of day to fly from KE9 to BOS?
Find hourly flight availability from Key Largo to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2026.
One of the essential ways to save on airfare from Key Largo to Boston is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 32% on airfare.
Weekly flight availability from Key Largo to Boston
Explore weekly flight availability from Key Largo to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 14, 2026.
The most flights from KE9 to BOS are scheduled on a Friday (27 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).
How much does it cost to fly round-trip from Key Largo to Boston?
Airfare is below average for this route at the moment.
Key Largo to Boston flights typically cost between $245 and $429 in November.The cheapest round-trip price found within the last 5 days was $207 on Frontier (Nov 6-Nov 9).
What is the cheapest day to fly from Key Largo to Boston?
Use this chart to determine the cheapest time to fly round-trip from Key Largo to Boston. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their Key Largo to Boston flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Boston
Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated September 14, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Key Largo to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Related info for your journey
Find useful and relevant information for your journey from Key Largo to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Book flights to Boston if you plan to visit one of these locationsWaltham
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$65 | Average$220 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$69 | Average$168 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$117 | Average$338 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$122 | Average$296 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$161 | Average$370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$377 | FlexibilityNo cancel fee | On-time69% |