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Cheap flights from Portland, Maine to Rapid City from $435

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Rapid City departing on 10/4. 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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Find the cheapest flights from Portland, Maine to Rapid City

Cheap round-trip flights

United Airlines Logo
6:14 am - 10:13 amPWM-RAP
5h 59m1 stop
United Airlines Logo
1:44 pm - 9:44 pmRAP-PWM
6h 00m1 stop
$435United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 14
United Airlines Logo
6:14 am - 10:13 amPWM-RAP
5h 59m1 stop
United Airlines Logo
1:44 pm - 9:44 pmRAP-PWM
6h 00m1 stop
$460United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 14
United Airlines Logo
6:00 am - 12:37 pmPWM-RAP
8h 37m2 stops
United Airlines Logo
1:44 pm - 9:44 pmRAP-PWM
6h 00m1 stop
$465United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 14
United Airlines Logo
6:14 am - 10:13 amPWM-RAP
5h 59m1 stop
United Airlines Logo
8:45 am - 11:17 pmRAP-PWM
12h 32m2 stops
$474United Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
American Airlines Logo
7:00 am - 9:19 pmPWM-RAP
16h 19m2 stops
American Airlines Logo
4:28 pm - 11:28 amRAP-PWM
17h 00m2 stops
$483American Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
Delta Logo
6:00 am - 11:37 amPWM-RAP
7h 37m1 stop
Delta Logo
4:26 pm - 1:56 pmRAP-PWM
19h 30m2 stops
$513Delta
Find Deal
Sat, Sep 6 - Tue, Sep 9
Delta Logo
1:46 pm - 10:36 pmPWM-RAP
10h 50m2 stops
Delta Logo
11:07 am - 11:19 pmRAP-PWM
10h 12m2 stops
$535Delta
Find Deal
Wed, Nov 5 - Mon, Nov 10
Delta Logo
6:00 am - 11:37 amPWM-RAP
7h 37m1 stop
Delta Logo
4:26 pm - 10:42 amRAP-PWM
16h 16m1 stop
$623Delta
Find Deal
Sat, Sep 6 - Tue, Sep 9
American Airlines Logo
7:05 am - 8:53 pmPWM-RAP
15h 48m2 stops
American Airlines Logo
6:12 pm - 12:29 pmRAP-PWM
16h 17m2 stops
$697American Airlines
Find Deal
Fri, Sep 12 - Sun, Sep 14
American Airlines Logo
6:15 am - 12:57 pmPWM-RAP
8h 42m1 stop
American Airlines Logo
1:12 pm - 10:43 pmRAP-PWM
7h 31m1 stop
$711American Airlines
Find Deal
Sat, Sep 6 - Tue, Sep 9

American Airlines flights from Portland, Maine to Rapid City

Our best American Airlines deals on Portland, Maine to Rapid City flight tickets
American Airlines
Oct 24
PWM7:00 amPortland
16h 19m
2 stops
RAP9:19 pmRapid City
Oct 27
RAP4:28 pmRapid City
17h 00m
2 stops
PWM11:28 amPortland
$483
Find similar
American Airlines
Sep 12
PWM7:05 amPortland
15h 48m
2 stops
RAP8:53 pmRapid City
Sep 14
RAP6:12 pmRapid City
16h 17m
2 stops
PWM12:29 pmPortland
$697
Find similar
American Airlines
Sep 6
PWM6:15 amPortland
8h 42m
1 stop
RAP12:57 pmRapid City
Sep 9
RAP1:12 pmRapid City
7h 31m
1 stop
PWM10:43 pmPortland
$711
Find similar

United Airlines flights from Portland, Maine to Rapid City

Our best United Airlines deals on Portland, Maine to Rapid City flight tickets
United Airlines
Oct 4
PWM6:14 amPortland
5h 59m
1 stop
RAP10:13 amRapid City
Oct 14
RAP1:44 pmRapid City
6h 00m
1 stop
PWM9:44 pmPortland
$435
Find similar
United Airlines
Oct 4
PWM6:14 amPortland
5h 59m
1 stop
RAP10:13 amRapid City
Oct 14
RAP1:44 pmRapid City
6h 00m
1 stop
PWM9:44 pmPortland
$460
Find similar
United Airlines
Oct 4
PWM6:00 amPortland
8h 37m
2 stops
RAP12:37 pmRapid City
Oct 14
RAP1:44 pmRapid City
6h 00m
1 stop
PWM9:44 pmPortland
$465
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine to Rapid City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 27, 2025.
Use the filters below to find and compare flights from Portland, Maine to Rapid City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sat 10/4

6:14 am-10:13 am

1 stop5h 59m

Rapid City

Tue 10/14

1:44 pm-9:44 pm

1 stop6h 00m

$435

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sat 10/4

6:14 am-10:13 am

1 stop5h 59m

Rapid City

Tue 10/14

1:44 pm-9:44 pm

1 stop6h 00m

$460

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sat 10/4

6:00 am-12:37 pm

2 stops8h 37m

Rapid City

Tue 10/14

1:44 pm-9:44 pm

1 stop6h 00m

$465

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 10/24

6:14 am-10:13 am

1 stop5h 59m

Rapid City

Mon 10/27

8:45 am-11:17 pm

2 stops12h 32m

$474

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 10/24

7:00 am-9:19 pm

2 stops16h 19m

Rapid City

Mon 10/27

4:28 pm-11:28 am

2 stops17h 00m

$483

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sat 9/6

6:00 am-11:37 am

1 stop7h 37m

Rapid City

Tue 9/9

4:26 pm-1:56 pm

2 stops19h 30m

$513

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Wed 11/5

1:46 pm-10:36 pm

2 stops10h 50m

Rapid City

Mon 11/10

11:07 am-11:19 pm

2 stops10h 12m

$535

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sat 9/6

6:00 am-11:37 am

1 stop7h 37m

Rapid City

Tue 9/9

4:26 pm-10:42 am

1 stop16h 16m

$623

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 9/12

7:05 am-8:53 pm

2 stops15h 48m

Rapid City

Sun 9/14

6:12 pm-12:29 pm

2 stops16h 17m

$697

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sat 9/6

6:15 am-12:57 pm

1 stop8h 42m

Rapid City

Tue 9/9

1:12 pm-10:43 pm

1 stop7h 31m

$711

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Rapid City from

How to get the cheapest flight ticket from Portland, Maine to Rapid City

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 day to depart on your flight to Rapid City?

According to our data, Thursday is the cheapest day to fly to Rapid City from Portland, Maine. The lowest ticket price found for a Thursday departure recently was $592. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Rapid City is Tuesday, with ticket prices averaging around $702.

What is the cheapest time of day to depart on your flight to Rapid City?

Our most recent data shows that the best time of day to fly to Rapid City is at noon. Flights from Portland, Maine to Rapid City during this time can be as low as $601. Flights in the morning are often more expensive with an average ticket price of $660.

Can stopping save me money on Portland, Maine to Rapid City flights?

You could potentially save up to 39% on your flight if you consider stops on a Portland, Maine to Rapid City flight.

When to book flights from Portland, Maine to Rapid City

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Rapid City according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Rapid City (PWM to RAP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Rapid City

Direct flights

None
There are no direct flights from Portland, Maine to Rapid City. There are no popular flight routes from Portland, Maine to Rapid City.
Search flight deals

  • How far is Portland to Rapid City by plane?

    The distance between Portland and Rapid City is about 1630.6 mi. Flights usually cover this in 5h 59m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Portland Airport to Rapid City Airport?

    Prices for flights from Portland Airport to Rapid City Airport were last updated today.

  • How many operators does momondo search for flights from Portland Airport to Rapid City Airport?

  • How old do you have to be to fly from Portland Airport to Rapid City Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Rapid City Airport.

  • What documentation or ID do you need to fly to Rapid City Airport?

    The necessary travel and health documents for your Rapid City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland, Maine to Rapid City?

Best airlines flying from Portland, Maine to Rapid City

Compare and see reviews for airlines that fly from Portland, Maine to Rapid City with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $313Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $350Free CancellationRating
7.4
8,945 reviews
Search United Airlines flights

Traveling to a place near Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Deadwood
Sturgis
Keystone
Spearfish
Custer
Hot Springs
Wall
Hill City

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Rapid City?

Finding the right flight to Rapid City from Portland 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 Rapid City quick and easy, saving you time and money.

Can I find flights from Portland to Rapid City with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portland to Rapid City flights to just show those with flexible booking policies.

How can momondo help me find flights from Portland to Rapid City?

momondo helps you find the best flight between Portland and Rapid City 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 Portland to Rapid City right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to Rapid City flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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