Flights from Houston to Grassy Key

Cheapest flights from Houston

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 18 - Thu, Jun 19

IAH

George Bush Intercontinental

MIA

Miami Intl.

$128 Roundtrip, just found

$128

Roundtrip

just found

Select Spirit Airlines flight, departing Wed, Jun 18 from George Bush Intercontinental to Miami Intl., returning Thu, Jun 19, priced at $128 just found

Mon, Jun 16 - Thu, Jun 19

IAH

George Bush Intercontinental

MIA

Miami Intl.

$143 Roundtrip, just found

$143

Roundtrip

just found

Select Spirit Airlines flight, departing Mon, Jun 16 from George Bush Intercontinental to Miami Intl., returning Thu, Jun 19, priced at $143 just found

Thu, Aug 28 - Sat, Sep 13

IAH

George Bush Intercontinental

MIA

Miami Intl.

$147 Roundtrip, found 4 days ago

$147

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Aug 28 from George Bush Intercontinental to Miami Intl., returning Sat, Sep 13, priced at $147 found 4 days ago

Sat, Jun 7 - Sat, Jun 14

IAH

George Bush Intercontinental

MIA

Miami Intl.

$148 Roundtrip, found 4 days ago

$148

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Sat, Jun 7 from George Bush Intercontinental to Miami Intl., returning Sat, Jun 14, priced at $148 found 4 days ago

Thu, Jun 19 - Thu, Jun 19

IAH

George Bush Intercontinental

MIA

Miami Intl.

$158 Roundtrip, just found

$158

Roundtrip

just found

Select Spirit Airlines flight, departing Thu, Jun 19 from George Bush Intercontinental to Miami Intl., returning Thu, Jun 19, priced at $158 just found

Fri, Sep 26 - Mon, Sep 29

IAH

George Bush Intercontinental

MIA

Miami Intl.

$167 Roundtrip, found 2 days ago

$167

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Sep 26 from George Bush Intercontinental to Miami Intl., returning Mon, Sep 29, priced at $167 found 2 days ago

Sat, Jun 7 - Sat, Jun 14

IAH

George Bush Intercontinental

MIA

Miami Intl.

$171 Roundtrip, found 4 days ago

$171

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Sat, Jun 7 from George Bush Intercontinental to Miami Intl., returning Sat, Jun 14, priced at $171 found 4 days ago

Sat, Sep 20 - Sun, Sep 28

IAH

George Bush Intercontinental

MIA

Miami Intl.

$173 Roundtrip, found 1 day ago

$173

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Sep 20 from George Bush Intercontinental to Miami Intl., returning Sun, Sep 28, priced at $173 found 1 day ago

Sun, Sep 28 - Mon, Sep 29

IAH

George Bush Intercontinental

MIA

Miami Intl.

$173 Roundtrip, found 2 days ago

$173

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Sun, Sep 28 from George Bush Intercontinental to Miami Intl., returning Mon, Sep 29, priced at $173 found 2 days ago

Mon, Oct 13 - Fri, Oct 17

IAH

George Bush Intercontinental

MIA

Miami Intl.

$177 Roundtrip, found 2 days ago

$177

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Oct 13 from George Bush Intercontinental to Miami Intl., returning Fri, Oct 17, priced at $177 found 2 days ago

Thu, Jun 19 - Sun, Jun 22

IAH

George Bush Intercontinental

MIA

Miami Intl.

$177 Roundtrip, just found

$177

Roundtrip

just found

Select Spirit Airlines flight, departing Thu, Jun 19 from George Bush Intercontinental to Miami Intl., returning Sun, Jun 22, priced at $177 just found

Sat, Aug 2 - Sat, Aug 9

IAH

George Bush Intercontinental

MIA

Miami Intl.

$177 Roundtrip, found 6 days ago

$177

Roundtrip

found 6 days ago

Select United flight, departing Sat, Aug 2 from George Bush Intercontinental to Miami Intl., returning Sat, Aug 9, priced at $177 found 6 days ago

Sat, Jun 7 - Sat, Jun 14

IAH

George Bush Intercontinental

MIA

Miami Intl.

$179 Roundtrip, found 4 days ago

$179

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Sat, Jun 7 from George Bush Intercontinental to Miami Intl., returning Sat, Jun 14, priced at $179 found 4 days ago

Sun, Jun 8 - Mon, Jun 16

IAH

George Bush Intercontinental

MIA

Miami Intl.

$186 Roundtrip, found 4 days ago

$186

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Sun, Jun 8 from George Bush Intercontinental to Miami Intl., returning Mon, Jun 16, priced at $186 found 4 days ago

Sun, Aug 3 - Tue, Aug 12

IAH

George Bush Intercontinental

MIA

Miami Intl.

$188 Roundtrip, found 3 days ago

$188

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Sun, Aug 3 from George Bush Intercontinental to Miami Intl., returning Tue, Aug 12, priced at $188 found 3 days ago

Tue, Aug 5 - Mon, Aug 11

IAH

George Bush Intercontinental

MIA

Miami Intl.

$191 Roundtrip, found 3 days ago

$191

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Tue, Aug 5 from George Bush Intercontinental to Miami Intl., returning Mon, Aug 11, priced at $191 found 3 days ago

Sat, Aug 2 - Sat, Aug 9

IAH

George Bush Intercontinental

MIA

Miami Intl.

$192 Roundtrip, found 6 days ago

$192

Roundtrip

found 6 days ago

Select Delta flight, departing Sat, Aug 2 from George Bush Intercontinental to Miami Intl., returning Sat, Aug 9, priced at $192 found 6 days ago

Sat, Oct 11 - Tue, Oct 21

IAH

George Bush Intercontinental

MIA

Miami Intl.

$197 Roundtrip, found 2 days ago

$197

Roundtrip

found 2 days ago

Select Delta flight, departing Sat, Oct 11 from George Bush Intercontinental to Miami Intl., returning Tue, Oct 21, priced at $197 found 2 days ago

Sat, Aug 2 - Sat, Aug 9

IAH

George Bush Intercontinental

MIA

Miami Intl.

$218 Roundtrip, found 6 days ago

$218

Roundtrip

found 6 days ago

Select American Airlines flight, departing Sat, Aug 2 from George Bush Intercontinental to Miami Intl., returning Sat, Aug 9, priced at $218 found 6 days ago

Sat, Jun 7 - Sat, Jun 14

HOU

William P. Hobby

MIA

Miami Intl.

$267 Roundtrip, found 4 days ago

$267

Roundtrip

found 4 days ago

Select American Airlines flight, departing Sat, Jun 7 from William P. Hobby to Miami Intl., returning Sat, Jun 14, priced at $267 found 4 days ago