Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $395 (Delta) |
Popular in | November |
Cheapest in | July |
Average price | $882 |
Fly from
Fly to
Route
Depart
Return
Price
HelenaWashington, D.C.
HLN - IAD
HLNIAD
Helena
Wed 4/2
1:15 pm-11:49 pm
1 stop8h 34m
Washington, D.C. Dulles Intl
Tue 4/8
7:35 am-12:35 pm
1 stop7h 00m
HelenaWashington, D.C.
HLN - IAD
HLNIAD
Helena
Tue 4/1
4:19 pm-5:34 am
1 stop11h 15m
Washington, D.C. Dulles Intl
Wed 4/9
7:00 am-3:39 pm
1 stop10h 39m
HelenaWashington, D.C.
HLN - IAD
HLNIAD
Helena
Fri 3/7
2:25 pm-11:23 pm
1 stop6h 58m
Washington, D.C. Dulles Intl
Sun 3/16
8:30 am-1:40 pm
1 stop7h 10m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars |
Currently, August is the cheapest month in which you can book a flight from Helena to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Helena to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.
If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).
Comfort
Overall
Food
Crew
Entertainment
Boarding
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Overall
Food
Crew
Entertainment
Boarding
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Overall
Food
Crew
Entertainment
Boarding
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Overall
Food
Crew
Entertainment
Boarding
Reviews
Cheri,Jan 2025
FAT - SEA
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$344 | Average$434 | FlexibilityNo cancel fee | On-time69% |