
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helena (HLN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (Alaska Airlines) |
One-way from | $94 (Delta) |
Popular in | June |
Cheapest in | January |
Average price | $338 |
Good round-trip deal | $282 or less |
Fly from
Fly to
Route
Depart
Return
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Sat 12/12
5:30 am-12:30 pm
1 stop6h 00m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Sun 1/3
1:02 pm-3:41 pm
Nonstop1h 39m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Sat 1/23
1:56 pm-4:31 pm
Nonstop1h 35m
Helena
Wed 1/27
5:08 pm-5:58 pm
Nonstop1h 50m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Sun 1/10
1:56 pm-4:31 pm
Nonstop1h 35m
Helena
Sat 1/16
5:08 pm-5:58 pm
Nonstop1h 50m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Tue 12/1
5:30 am-12:30 pm
1 stop6h 00m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Tue 12/15
1:35 pm-4:12 pm
Nonstop1h 37m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Sat 1/23
5:00 am-1:40 pm
1 stop7h 40m
Helena
Wed 1/27
6:15 am-1:50 pm
1 stop8h 35m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Tue 12/1
1:35 pm-4:12 pm
Nonstop1h 37m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Thu 12/24
1:02 pm-3:41 pm
Nonstop1h 39m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
SeattleHelena
SEA Seattle/Tacoma Intl - HLN Helena
SEAHLN
Seattle/Tacoma Intl
Fri 11/20
12:45 pm-9:31 pm
1 stop7h 46m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
Everything you need to know about your flight from Seattle to Helena
Crew
Overall
Entertainment
Food
Comfort
Boarding
Reviews
Anonymous,Jun 2026
SEA - RNO
Crew
Overall
Entertainment
Food
Comfort
Boarding
Reviews
Anonymous,Jun 2026
SEA - RNO
Find useful and relevant information for your journey from Seattle to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$267 | FlexibilityNo cancel fee | On-time75% |