$65+ Cheap flights from O'Hare Intl (ORD) to Key Largo, FL
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MIA
Jun 5 — Jun 121
Round-trip
1 adult, Economy
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Find cheap flights from O'Hare Intl to Key Largo 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 Chicago O'Hare Intl to Key Largo are usually found in September or January, booked 41 days in advance, depart on a Monday or Sunday and return on a Friday
Cheap flight deals from O'Hare Intl to Key Largo
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Best
Last-minute
One-way
Cheapest flights from O'Hare Intl to Key LargoExplore the most affordable flight options available from O'Hare Intl to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 6, 2026.
Explore the most affordable flight options available from O'Hare Intl to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 6/21:29 pm
ORD
- MIA
1 stop8h 18m
Multiple Airlines
Thu 6/49:30 pm
MIA
- ORD
Nonstop3h 26m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/6. 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.
Tue 6/96:55 am
ORD
- MIA
1 stop8h 36m
Frontier
Tue 6/1611:19 am
MIA
- ORD
1 stop9h 31m
Frontier
Deal found 5/6![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Tue 8/47:05 am
ORD
- MIA
1 stop5h 48m
Frontier
Tue 8/1111:19 am
MIA
- ORD
1 stop9h 34m
Frontier
Deal found 5/5![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 5/6. 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.
Wed 6/101:29 pm
ORD
- MIA
1 stop8h 34m
Frontier
Tue 6/168:30 am
MIA
- ORD
1 stop12h 20m
Frontier
Deal found 5/6![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Tue 6/21:29 pm
ORD
- MIA
1 stop8h 18m
Frontier
Tue 6/911:19 am
MIA
- ORD
1 stop9h 34m
Frontier
Deal found 5/5![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 5/261:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Thu 5/2811:23 am
MIA
- ORD
1 stop9h 18m
Frontier
Deal found 5/4![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Wed 5/271:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Tue 6/211:23 am
MIA
- ORD
1 stop9h 06m
Frontier
Deal found 5/4![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Thu 5/286:55 am
ORD
- MIA
1 stop8h 32m
Frontier
Mon 6/18:10 am
MIA
- ORD
1 stop24h 45m
Frontier
Deal found 5/4![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 5/261:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Tue 6/211:23 am
MIA
- ORD
1 stop9h 06m
Frontier
Deal found 5/4![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/61:29 pm
ORD
- MIA
1 stop8h 18m
Frontier
Wed 6/1011:19 am
MIA
- ORD
1 stop9h 31m
Frontier
Deal found 5/5![Frontier logo]()
$148
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/249:20 am
ORD
- MIA
Nonstop3h 08m
Spirit Airlines
Fri 5/299:30 pm
MIA
- ORD
Nonstop3h 26m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$149
This Spirit deal was found by Cheapflights users on 5/2. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:10 am
ORD
- MIA
Nonstop3h 13m
Spirit Airlines
Sat 7/189:44 am
MIA
- ORD
Nonstop3h 19m
Spirit Airlines
Deal found 5/2![Spirit Airlines logo]()
$150
Best flights from O'Hare Intl to Key LargoDiscover carefully curated flight deals from O'Hare Intl to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2026.
Discover carefully curated flight deals from O'Hare Intl to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2026.
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/262:59 pm
ORD
- MIA
1 stop5h 19m
Delta
Thu 5/287:39 pm
MIA
- ORD
1 stop5h 20m
Delta
Deal found 5/5![Delta logo]()
$230
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/282:40 pm
ORD
- MIA
2 stops6h 20m
Southwest
Mon 6/16:20 am
MIA
- ORD
1 stop9h 00m
Southwest
Deal found 5/4![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Sat 5/237:00 am
ORD
- MIA
Nonstop3h 24m
United Airlines
Tue 5/2612:30 pm
MIA
- ORD
Nonstop3h 43m
United Airlines
Deal found 5/4![United Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 5/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/231:55 pm
ORD
- MIA
2 stops8h 20m
Southwest
Sat 5/306:35 am
MIA
- ORD
2 stops9h 55m
Southwest
Deal found 5/5![Southwest logo]()
$328
This United Airlines deal was found by Cheapflights users on 5/6. 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 5/271:15 pm
ORD
- MIA
1 stop9h 07m
United Airlines
Sun 5/315:39 pm
MIA
- ORD
Nonstop3h 44m
United Airlines
Deal found 5/6![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/157:00 am
ORD
- MIA
Nonstop3h 24m
United Airlines
Sat 7/188:48 am
MIA
- ORD
1 stop8h 51m
United Airlines
Deal found 5/6![United Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 5/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1311:55 am
ORD
- MIA
2 stops9h 00m
Southwest
Sat 5/166:15 am
MIA
- ORD
2 stops10h 15m
Southwest
Deal found 5/2![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 5/5. 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 7/247:00 am
ORD
- MIA
Nonstop3h 24m
United Airlines
Sat 8/17:07 am
MIA
- ORD
1 stop8h 46m
United Airlines
Deal found 5/5![United Airlines logo]()
$370
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/161:55 pm
ORD
- MIA
2 stops7h 10m
Southwest
Sat 5/236:35 am
MIA
- ORD
2 stops9h 55m
Southwest
Deal found 5/4![Southwest logo]()
$405
This United Airlines deal was found by Cheapflights users on 5/2. 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.
Fri 7/107:00 am
ORD
- MIA
Nonstop3h 24m
United Airlines
Mon 7/135:40 pm
MIA
- ORD
Nonstop3h 41m
United Airlines
Deal found 5/2![United Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 5/3. 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.
Thu 5/285:00 am
ORD
- MIA
1 stop8h 38m
United Airlines
Mon 6/15:39 pm
MIA
- ORD
Nonstop3h 43m
United Airlines
Deal found 5/3![United Airlines logo]()
$410
This United Airlines deal was found by Cheapflights users on 5/2. 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 6/610:40 am
ORD
- MIA
Nonstop3h 24m
United Airlines
Sun 6/75:39 pm
MIA
- ORD
Nonstop3h 43m
United Airlines
Deal found 5/2![United Airlines logo]()
$421
Last-minute flights from O'Hare Intl to Key LargoDiscover last-minute flight deals from O'Hare Intl to Key Largo. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Key Largo. Data last updated May 6, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/249:20 am
ORD
- MIA
Nonstop3h 08m
Spirit Airlines
Fri 5/299:30 pm
MIA
- ORD
Nonstop3h 26m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 5/261:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Thu 5/2811:23 am
MIA
- ORD
1 stop9h 18m
Frontier
Deal found 5/4![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 5/261:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Tue 6/211:23 am
MIA
- ORD
1 stop9h 06m
Frontier
Deal found 5/4![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 5/261:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Sat 5/308:10 am
MIA
- ORD
1 stop12h 31m
Frontier
Deal found 5/4![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Wed 5/271:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Tue 6/211:23 am
MIA
- ORD
1 stop9h 06m
Frontier
Deal found 5/4![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Wed 5/271:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Sat 5/3011:23 am
MIA
- ORD
1 stop9h 18m
Frontier
Deal found 5/4![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Thu 5/286:55 am
ORD
- MIA
1 stop8h 32m
Frontier
Mon 6/18:10 am
MIA
- ORD
1 stop24h 45m
Frontier
Deal found 5/4![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 6/21:29 pm
ORD
- MIA
1 stop8h 18m
Multiple Airlines
Thu 6/49:30 pm
MIA
- ORD
Nonstop3h 26m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Tue 6/21:29 pm
ORD
- MIA
1 stop8h 18m
Frontier
Tue 6/911:19 am
MIA
- ORD
1 stop9h 34m
Frontier
Deal found 5/5![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/61:29 pm
ORD
- MIA
1 stop8h 18m
Frontier
Wed 6/1011:19 am
MIA
- ORD
1 stop9h 31m
Frontier
Deal found 5/5![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 5/6. 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.
Tue 6/96:55 am
ORD
- MIA
1 stop8h 36m
Frontier
Tue 6/1611:19 am
MIA
- ORD
1 stop9h 31m
Frontier
Deal found 5/6![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 5/6. 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.
Wed 6/101:29 pm
ORD
- MIA
1 stop8h 34m
Frontier
Tue 6/168:30 am
MIA
- ORD
1 stop12h 20m
Frontier
Deal found 5/6![Frontier logo]()
$132
One-way flights from O'Hare Intl to Key LargoSearch for one-way flight options from O'Hare Intl to Key Largo. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
Search for one-way flight options from O'Hare Intl to Key Largo. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/31:29 pm
ORD
- MIA
1 stop8h 18m
Frontier
Deal found 5/5![Frontier logo]()
$65
This WAYA deal was found by Cheapflights users on 5/6. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:29 pm
ORD
- MIA
1 stop8h 18m
Frontier
Deal found 5/6![Frontier logo]()
$68
This Trip.com deal was found by Cheapflights users on 5/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/271:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Deal found 5/4![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Tue 6/161:29 pm
ORD
- MIA
1 stop8h 34m
Frontier
Deal found 5/5![Frontier logo]()
$70
This WAYA deal was found by Cheapflights users on 5/4. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:55 am
ORD
- MIA
1 stop8h 32m
Frontier
Deal found 5/4![Frontier logo]()
$74
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/61:29 pm
ORD
- MIA
1 stop8h 18m
Frontier
Deal found 5/5![Frontier logo]()
$78
This Super.com deal was found by Cheapflights users on 5/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/231:50 pm
ORD
- MIA
1 stop7h 57m
Frontier
Deal found 5/2![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Sat 5/306:55 am
ORD
- MIA
1 stop14h 52m
Frontier
Deal found 5/4![Frontier logo]()
$84
This CheapOair deal was found by Cheapflights users on 5/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/249:37 pm
ORD
- MIA
1 stop30h 56m
Frontier
Deal found 5/2![Frontier logo]()
$86
This eDestinos deal was found by Cheapflights users on 5/2. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:55 am
ORD
- MIA
1 stop8h 32m
Frontier
Deal found 5/2![Frontier logo]()
$91
Find flight deals from O'Hare Intl to Key Largo
Keep the following information in mind while searching for O'Hare Intl to Key Largo flight deals. Data was last updated May 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $124 (Kiwi.com) |
One-way from | $65 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $277 |
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare Intl to Key Largo 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 2,558,603 searches. Data last updated May 6, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Tue 5/26
2:59 pm-9:18 pm
1 stop5h 19m
Miami
Thu 5/28
7:39 pm-11:59 pm
1 stop5h 20m
$230
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Thu 5/28
2:40 pm-10:00 pm
2 stops6h 20m
Miami
Mon 6/1
6:20 am-2:20 pm
1 stop9h 00m
$297
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Sat 5/23
7:00 am-11:24 am
Nonstop3h 24m
Miami
Tue 5/26
12:30 pm-3:13 pm
Nonstop3h 43m
$311
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Sat 5/23
1:55 pm-11:15 pm
2 stops8h 20m
Miami
Sat 5/30
6:35 am-3:30 pm
2 stops9h 55m
$328
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Wed 5/27
1:15 pm-11:22 pm
1 stop9h 07m
Miami
Sun 5/31
5:39 pm-8:23 pm
Nonstop3h 44m
$354
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Wed 7/15
7:00 am-11:24 am
Nonstop3h 24m
Miami
Sat 7/18
8:48 am-4:39 pm
1 stop8h 51m
$358
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Fri 7/24
7:00 am-11:24 am
Nonstop3h 24m
Miami
Sat 8/1
7:07 am-2:53 pm
1 stop8h 46m
$370
Quickest round-trip
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Fri 7/10
7:00 am-11:24 am
Nonstop3h 24m
Miami
Mon 7/13
5:40 pm-8:21 pm
Nonstop3h 41m
$393
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Wed 5/13
11:55 am-9:55 pm
2 stops9h 00m
Miami
Sat 5/16
6:15 am-3:30 pm
2 stops10h 15m
$396
ChicagoMiami
ORD - MIA
ORDMIA
Chicago O'Hare Intl
Sat 5/16
1:55 pm-10:05 pm
2 stops7h 10m
Miami
Sat 5/23
6:35 am-3:30 pm
2 stops9h 55m
$405
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from O'Hare Intl to Key Largo
Have a flexible travel schedule? Discover the best time to fly to Key Largo from O'Hare Intl with our price prediction graph.
ORD-MIA
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 Chicago O'Hare Intl Airport to Key Largo
ORD-KE9
ORD-MIA
What is the cheapest time of day to fly from ORD to KE9?
Find hourly flight availability from O'Hare Intl to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 6, 2026.
It’s optimal to fly from Chicago O'Hare Intl Airport to Key Largo in the evening. By choosing this option you can save up to 31% on the cost of your flight, compared to a flight in the morning.
What is the cheapest day to fly from Chicago O'Hare Intl Airport to Key Largo?
Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Key Largo. Price data was last updated on May 2, 2026.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Key Largo flight should consider departing on Sunday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Chicago O'Hare Intl Airport to Key Largo
Explore weekly flight availability from O'Hare Intl to Key Largo. 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 May 6, 2026.
The most flights from ORD to KE9 are scheduled on a Wednesday (56 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 on average).
How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Key Largo?
Reviews of airlines servicing Key Largo
Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated May 6, 2026.
See what other customers who have flown with United Airlines,American Airlines, andJetBlue from Chicago O'Hare Intl Airport to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Food
6.6
Entertainment
7.1
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Crew
8.1
Food
6.6
Entertainment
7.1
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Crew
8.1
Food
6.6
Entertainment
7.1
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Crew
8.1
Food
6.6
Entertainment
7.1
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Crew
8.1
Food
6.6
Entertainment
7.1
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Crew
8.1
Food
6.6
Entertainment
7.1
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl to Key Largo. 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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Alternative routes for O'Hare Intl to Key Largo
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Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from O'Hare Intl to Key Largo by cabin class
Find flights from O'Hare Intl to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
O'Hare Intl and Key Largo flights
Browse other O'Hare Intl and Key Largo flight options. Last updated on May 6, 2026.
Other flights from O'Hare Intl
Browse through other flights departing from O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on May 6, 2026.
Popular flight searches
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O'Hare Intl to Key Largo flights
Consider these flights traveling from O'Hare Intl to Key Largo.
Top 8 airlines flying from O'Hare Intl to Key Largo
Discover the top 8 airlines that operate flights from O'Hare Intl to Key Largo. 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 2,558,603 searches. Data last updated May 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$187 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$244 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$89 | Average$272 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$108 | Average$367 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$155 | Average$367 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$375 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$176 | Average$249 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$176 | Average$347 | FlexibilityNo cancel fee | On-time63% |