Flights to Key Largo from Houston - $37

View $37 flight on Mon, Oct 6, 2025Opens in a new window

Popular airlines from Houston to Key Largo

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Cheap Flights from Houston to Key Largo (HOU-MIA)

Prices were available within the past 7 days and start at $37 for one-way flights and $74 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Mon, Sep 15 - Fri, Sep 19
IAH
Houston
MIA
Miami
$74 Roundtrip, just found
$74
Roundtrip
just found
Select Spirit Airlines flight, departing Mon, Sep 15 from Houston to Miami, returning Fri, Sep 19, priced at $74 just found
Spirit Airlines
Wed, Aug 6 - Tue, Aug 12
IAH
Houston
MIA
Miami
$81 Roundtrip, found 2 hours ago
$81
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Wed, Aug 6 from Houston to Miami, returning Tue, Aug 12, priced at $81 found 2 hours ago
American Airlines
Mon, Sep 15 - Fri, Sep 19
IAH
Houston
MIA
Miami
$83 Roundtrip, just found
$83
Roundtrip
just found
Select American Airlines flight, departing Mon, Sep 15 from Houston to Miami, returning Fri, Sep 19, priced at $83 just found
United
Wed, Jul 30 - Wed, Aug 13
IAH
Houston
MIA
Miami
$91 Roundtrip, found 6 hours ago
$91
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Jul 30 from Houston to Miami, returning Wed, Aug 13, priced at $91 found 6 hours ago
Southwest Airlines
Sat, Aug 23 - Sat, Aug 30
HOU
Houston
MIA
Miami
$91 Roundtrip, found 1 hour ago
$91
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Aug 23 from Houston to Miami, returning Sat, Aug 30, priced at $91 found 1 hour ago
Frontier Airlines
Thu, Aug 7 - Wed, Aug 13
IAH
Houston
MIA
Miami
$97 Roundtrip, found 6 hours ago
$97
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Thu, Aug 7 from Houston to Miami, returning Wed, Aug 13, priced at $97 found 6 hours ago

Find the cheapest month to fly from Houston (HOU) to Miami (MIA)

March is typically the cheapest month to fly

From $58 - $417 per traveler.

Graph displaying average flight prices per month

Alternative airports near Key Largo

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Miami Intl. MIA. Cheapest option available. Average driving time to city center is 1 hour 17 minutes. Flights from $128
MIA
Miami Intl.
Cheapest
Average driving time to city center1 h 17 min
Flights from $128
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