Cheap flights from Harlingen, TX to Seattle, WA

One search, all the flights

We find you the best flight deals and travel hacks so that you can choose how to book.

Rise above all travel anxieties

With the Kiwi.com Guarantee we have your back with whatever happens.

Trusted by millions

Join over 10 million yearly travellers booking with ease.

Tips to know when travelling to Seattle

Book your trip to arrive at Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base. The most popular airline for this route is United Airlines. Harlingen and Seattle have 40 direct flights per week.

Check-in for a flight from Harlingen to Seattle

NameCarrier codeIATA CodePassport needed during booking
United AirlinesUALUAYes

Weather in Seattle

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January7°C2°C
February8°C1°C
March10°C3°C
April13°C4°C
May18°C8°C
June21°C10°C
July25°C13°C
August26°C14°C
September22°C11°C
October15°C7°C
November10°C4°C
December6°C1°C
Hottest Month
26°C
August
Coldest month
1°C
February
Sunny days
252
days per year
Snow days
5
days per year

14 day forecast

Wednesday
13 Nov
88%
13°C9°C
20 Nov
9°C3°C
Thursday
14 Nov
84%
10°C7°C
21 Nov
11°C4°C
Friday
15 Nov
7°C6°C
22 Nov
11°C5°C
Saturday
16 Nov
86%
6°C5°C
23 Nov
11°C6°C
Sunday
17 Nov
84%
9°C5°C
24 Nov
9°C5°C
Monday
18 Nov
85%
8°C3°C
25 Nov
86%
8°C7°C
Tuesday
19 Nov
7°C2°C
26 Nov
11°C6°C

Frequently asked questions

What are the most popular routes to and from Harlingen?
What are the most popular routes to and from Seattle?
What airports are near Harlingen?
What airports are near Seattle?
Which airlines fly between Harlingen and Seattle?
When's the best time to travel between Harlingen and Seattle?
What flights operate between Harlingen and Seattle?
How many airports are there near Harlingen?
How many airports are there near Seattle?
What time do nonstop (direct) flights between Harlingen and Seattle depart?
What time do nonstop (direct) flights between Harlingen and Seattle arrive?
What time do flights between Harlingen and Seattle depart?
What time do flights between Harlingen and Seattle arrive?

Explore alternative trips

Flights from Harlingen

Flights to Seattle

Popular routes

The nearest countries with flights to Seattle

Here is a list of countries people are flying from

Other destination countries from Harlingen

Here is a list of countries people are flying to
Find the best connection from Harlingen to Seattle
Search flights
We hack the system,
you fly for less