Flights from Seattle to Harlingen

Cheapest flights from Seattle

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.

Mon, Jun 16 - Tue, Jul 22

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$254 Roundtrip, found 5 days ago

$254

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Tue, Jul 22, priced at $254 found 5 days ago

Mon, Jun 16 - Tue, Jul 22

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$259 Roundtrip, found 5 days ago

$259

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Tue, Jul 22, priced at $259 found 5 days ago

Mon, Jun 16 - Tue, Jul 22

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$281 Roundtrip, found 5 days ago

$281

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Tue, Jul 22, priced at $281 found 5 days ago

Mon, Jun 16 - Sun, Jul 20

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$282 Roundtrip, found 5 days ago

$282

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Sun, Jul 20, priced at $282 found 5 days ago

Fri, Jun 13 - Fri, Jul 11

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$287 Roundtrip, found 5 days ago

$287

Roundtrip

found 5 days ago

Select United flight, departing Fri, Jun 13 from Seattle - Tacoma Intl. to Valley Intl., returning Fri, Jul 11, priced at $287 found 5 days ago

Fri, Jun 13 - Mon, Jul 14

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$295 Roundtrip, found 5 days ago

$295

Roundtrip

found 5 days ago

Select American Airlines flight, departing Fri, Jun 13 from Seattle - Tacoma Intl. to Valley Intl., returning Mon, Jul 14, priced at $295 found 5 days ago

Mon, Jun 16 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$297 Roundtrip, found 5 days ago

$297

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Tue, Jul 15, priced at $297 found 5 days ago

Mon, Jun 16 - Mon, Jul 21

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$300 Roundtrip, found 5 days ago

$300

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Mon, Jul 21, priced at $300 found 5 days ago

Fri, Jun 13 - Fri, Jul 11

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$307 Roundtrip, found 5 days ago

$307

Roundtrip

found 5 days ago

Select United flight, departing Fri, Jun 13 from Seattle - Tacoma Intl. to Valley Intl., returning Fri, Jul 11, priced at $307 found 5 days ago

Fri, Jun 13 - Fri, Jul 11

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$312 Roundtrip, found 5 days ago

$312

Roundtrip

found 5 days ago

Select United flight, departing Fri, Jun 13 from Seattle - Tacoma Intl. to Valley Intl., returning Fri, Jul 11, priced at $312 found 5 days ago

Mon, Jun 16 - Tue, Jul 22

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$315 Roundtrip, found 5 days ago

$315

Roundtrip

found 5 days ago

Select American Airlines flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Tue, Jul 22, priced at $315 found 5 days ago

Fri, Jun 13 - Mon, Jul 14

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$318 Roundtrip, found 5 days ago

$318

Roundtrip

found 5 days ago

Select American Airlines flight, departing Fri, Jun 13 from Seattle - Tacoma Intl. to Valley Intl., returning Mon, Jul 14, priced at $318 found 5 days ago

Mon, Jun 16 - Tue, Jul 22

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$318 Roundtrip, found 5 days ago

$318

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Tue, Jul 22, priced at $318 found 5 days ago

Fri, Jun 13 - Mon, Jul 14

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$319 Roundtrip, found 5 days ago

$319

Roundtrip

found 5 days ago

Select United flight, departing Fri, Jun 13 from Seattle - Tacoma Intl. to Valley Intl., returning Mon, Jul 14, priced at $319 found 5 days ago

Tue, Jun 17 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$320 Roundtrip, found 5 days ago

$320

Roundtrip

found 5 days ago

Select American Airlines flight, departing Tue, Jun 17 from Seattle - Tacoma Intl. to Valley Intl., returning Tue, Jul 15, priced at $320 found 5 days ago

Sat, Jun 14 - Sat, Jul 12

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$322 Roundtrip, found 5 days ago

$322

Roundtrip

found 5 days ago

Select United flight, departing Sat, Jun 14 from Seattle - Tacoma Intl. to Valley Intl., returning Sat, Jul 12, priced at $322 found 5 days ago

Fri, Jun 13 - Mon, Jul 14

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$323 Roundtrip, found 5 days ago

$323

Roundtrip

found 5 days ago

Select United flight, departing Fri, Jun 13 from Seattle - Tacoma Intl. to Valley Intl., returning Mon, Jul 14, priced at $323 found 5 days ago

Mon, Jun 16 - Tue, Jul 22

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$327 Roundtrip, found 5 days ago

$327

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Tue, Jul 22, priced at $327 found 5 days ago

Mon, Jun 16 - Mon, Jul 14

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$328 Roundtrip, found 5 days ago

$328

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Mon, Jul 14, priced at $328 found 5 days ago

Mon, Jun 16 - Mon, Jul 21

SEA

Seattle - Tacoma Intl.

HRL

Valley Intl.

$329 Roundtrip, found 5 days ago

$329

Roundtrip

found 5 days ago

Select United flight, departing Mon, Jun 16 from Seattle - Tacoma Intl. to Valley Intl., returning Mon, Jul 21, priced at $329 found 5 days ago