Cheap flights from Helena to Washington, D.C. from $208
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to Washington, D.C. departing on 10/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Delta flights from Helena to Washington, D.C.
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Fly from
Fly to
Route
Depart
Return
HelenaWashington, D.C.
HLN Helena - IAD Washington, D.C. Dulles Intl
HLNIAD
Helena
Wed 12/2
1:10 pm-11:47 pm
1 stop8h 37m
Washington, D.C. Dulles Intl
Sat 12/5
7:00 am-12:30 pm
1 stop7h 30m
HelenaWashington, D.C.
HLN Helena - IAD Washington, D.C. Dulles Intl
HLNIAD
Helena
Sun 10/25
1:08 pm-11:35 pm
1 stop8h 27m
Washington, D.C. Dulles Intl
Sat 10/31
6:13 am-12:28 pm
1 stop8h 15m
HelenaWashington, D.C.
HLN Helena - IAD Washington, D.C. Dulles Intl
HLNIAD
Helena
Sun 10/25
1:08 pm-11:35 pm
1 stop8h 27m
Washington, D.C. Dulles Intl
Sat 10/31
2:28 pm-10:29 pm
2 stops10h 01m
HelenaWashington, D.C.
HLN Helena - IAD Washington, D.C. Dulles Intl
HLNIAD
Helena
Sat 10/24
1:08 pm-12:42 am
2 stops9h 34m
Washington, D.C. Dulles Intl
Wed 10/28
12:27 pm-10:24 pm
2 stops11h 57m
HelenaBaltimore
HLN Helena - BWI Baltimore/Washington
HLNBWI
Helena
Sat 10/24
1:08 pm-12:51 am
2 stops9h 43m
Baltimore/Washington
Wed 10/28
12:00 pm-10:24 pm
2 stops12h 24m
HelenaWashington, D.C.
HLN Helena - DCA Washington, D.C. Reagan-National
HLNDCA
Helena
Sat 10/24
7:15 am-4:49 pm
1 stop7h 34m
Washington, D.C. Reagan-National
Wed 10/28
10:10 am-10:24 pm
2 stops14h 14m
HelenaWashington, D.C.
HLN Helena - DCA Washington, D.C. Reagan-National
HLNDCA
Helena
Sat 10/24
7:15 am-5:29 pm
2 stops8h 14m
Washington, D.C. Reagan-National
Wed 10/28
10:10 am-10:24 pm
2 stops14h 14m
HelenaBaltimore
HLN Helena - BWI Baltimore/Washington
HLNBWI
Helena
Fri 10/23
2:30 pm-11:44 pm
1 stop7h 14m
Baltimore/Washington
Tue 10/27
4:19 pm-9:31 pm
1 stop7h 12m
HelenaWashington, D.C.
HLN Helena - IAD Washington, D.C. Dulles Intl
HLNIAD
Helena
Sun 10/25
1:08 pm-11:35 pm
1 stop8h 27m
Washington, D.C. Dulles Intl
Tue 10/27
6:13 am-12:28 pm
1 stop8h 15m
HelenaBaltimore
HLN Helena - BWI Baltimore/Washington
HLNBWI
Helena
Fri 10/23
2:30 pm-11:44 pm
1 stop7h 14m
Baltimore/Washington
Tue 10/27
6:10 am-1:40 pm
2 stops9h 30m
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Helena to Washington, D.C.
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest airline that flies from Helena to Washington, D.C.?
Delta, United Airlines, and Alaska Airlines are the most popular carriers operating from Helena to Washington, D.C.
What airlines fly to Washington, D.C.?
United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Washington, D.C. from Helena according to our data. United Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.
When to book flights from Helena to Washington, D.C.
Cheap Helena to Washington, D.C. (HLN to WAS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Helena to Washington, D.C.
Frequently asked questions about flying from Helena to Washington, D.C.
How far is Helena to Washington, D.C. by plane?
There are 1835.3 mi between Helena and Washington, D.C.. In terms of flight time, this usually takes a little over 6h 24m.
When did momondo last update prices for flights from Helena Airport to Washington, D.C.?
Prices for flights from Helena Airport to Washington, D.C. refresh daily.
How many operators does momondo search for flights from Helena Airport to Washington, D.C.?
The number of operators available for flights from Helena Airport to Washington, D.C. is 1 as of October 2026.
How old do you have to be to fly from Helena Airport to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Helena Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Helena to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Helena to Washington, D.C. is United Airlines (100% of total bookings).
Best airlines flying from Helena to Washington, D.C.
Compare and see reviews for airlines that fly from Helena to Washington, D.C. with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $348 | Free Cancellation | Rating 7.4 10,324 reviews |
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Helena to Washington, D.C.?
Finding the right flight to Washington, D.C. from Helena is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.
Can I find flights from Helena to Washington, D.C. with flexible booking policies on momondo?
momondo does allow users to show only those flights to Washington, D.C. from Helena which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Helena to Washington, D.C.?
momondo helps you find the best flight between Helena and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Helena to Washington, D.C. right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Helena to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.