HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Monrovia

$71+ Cheap flights from Seattle (SEA) to Monrovia, CA, CA

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LAX
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Monrovia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Monrovia are usually found in March or May, booked 65 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Seattle to Monrovia

Cheapest flights from Seattle to Monrovia
Explore the most affordable flight options available from Seattle to Monrovia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

This Booking.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:24 pm
SEA
-
LAX
Nonstop2h 48m
Frontier
Mon 3/162:14 pm
LAX
-
SEA
Nonstop2h 55m
Frontier
Deal found 2/10$106
This Frontier deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:42 am
SEA
-
LAX
Nonstop2h 48m
Frontier
Mon 4/2011:03 am
LAX
-
SEA
1 stop5h 38m
Frontier
Deal found 2/12$108
This Trip.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:24 pm
SEA
-
LAX
Nonstop2h 48m
Frontier
Thu 3/192:14 pm
LAX
-
SEA
Nonstop2h 55m
Frontier
Deal found 2/12$110
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:59 pm
SEA
-
LAX
Nonstop2h 46m
Frontier
Wed 4/81:39 pm
LAX
-
SEA
Nonstop3h 05m
Frontier
Deal found 2/10$111
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:24 pm
SEA
-
LAX
Nonstop2h 48m
Frontier
Wed 3/252:37 pm
LAX
-
SEA
1 stop6h 26m
Frontier
Deal found 2/11$112
This Frontier deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:42 am
SEA
-
LAX
Nonstop2h 48m
Frontier
Mon 4/2711:03 am
LAX
-
SEA
1 stop5h 38m
Frontier
Deal found 2/9$113
This Frontier deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2910:42 am
SEA
-
LAX
Nonstop2h 48m
Frontier
Thu 5/72:45 pm
LAX
-
SEA
Nonstop2h 57m
Frontier
Deal found 2/9$114
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/299:35 pm
SEA
-
LAX
1 stop10h 45m
Frontier
Fri 4/31:39 pm
LAX
-
SEA
Nonstop3h 05m
Frontier
Deal found 2/10$115
This Trip.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:24 pm
SEA
-
LAX
Nonstop2h 48m
Frontier
Wed 3/182:14 pm
LAX
-
SEA
Nonstop2h 55m
Frontier
Deal found 2/11$116
This Delta deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/511:17 am
SEA
-
LAX
Nonstop2h 38m
Delta
Mon 3/98:30 pm
LAX
-
SEA
Nonstop2h 51m
Delta
Deal found 2/12$117
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/75:31 pm
SEA
-
LAX
Nonstop2h 48m
Multiple Airlines
Tue 3/108:52 am
LAX
-
SEA
1 stop5h 56m
Multiple Airlines
Deal found 2/12$118
This CheapOair deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3010:42 am
SEA
-
LAX
Nonstop2h 48m
Frontier
Sun 5/32:17 pm
LAX
-
SEA
1 stop24h 48m
Frontier
Deal found 2/12$119

Find flight deals from Seattle to Monrovia

Keep the following information in mind while searching for Seattle to Monrovia flight deals. Data was last updated February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$106
(Booking.com)

One-way from

$71
(Southwest)

Popular in

December

Cheapest in

March

Average price

$246
Provider with most accurate pricing for Seattle/Tacoma Intl-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Los Angeles flights.
Search Deals
From Seattle/Tacoma Intl to Monrovia
Search Deals
One-way flight from Seattle/Tacoma Intl to Monrovia
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Monrovia 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, Cheapflights users made 2,558,603 searches. Data last updated February 13, 2026.
Use the filters below to find and compare flights from Seattle to Monrovia that are best for you.

Fly from

Seattle

Fly to

Monrovia

Route

Depart

Return

Price

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sun 4/12

10:01 pm-2:20 pm

1 stop16h 19m

Los Angeles

Wed 4/15

2:45 pm-5:42 pm

Nonstop2h 57m

$116

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 4/7

6:20 am-9:05 am

Nonstop2h 45m

Los Angeles

Wed 4/15

4:48 pm-7:45 pm

Nonstop2h 57m

$137

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 3/13

9:14 pm-11:59 pm

Nonstop2h 45m

Los Angeles

Fri 3/20

6:00 am-8:59 am

Nonstop2h 59m

$137

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 3/4

7:59 pm-10:45 pm

Nonstop2h 46m

Los Angeles

Mon 3/9

7:35 am-10:24 am

Nonstop2h 49m

$147

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 3/4

2:00 pm-4:35 pm

Nonstop2h 35m

Los Angeles

Sun 3/8

7:30 am-10:19 am

Nonstop2h 49m

$147

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Mon 4/13

6:30 am-12:35 pm

1 stop6h 05m

Los Angeles

Thu 4/16

3:40 pm-11:05 pm

1 stop7h 25m

$151

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Mon 4/20

1:55 pm-10:25 pm

1 stop8h 30m

Los Angeles

Fri 4/24

5:00 pm-10:35 pm

1 stop5h 35m

$151

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 3/11

7:30 am-11:45 am

1 stop4h 15m

Los Angeles

Wed 3/18

2:10 pm-9:40 pm

1 stop7h 30m

$152

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 3/7

9:50 am-6:50 pm

1 stop9h 00m

Los Angeles

Mon 3/9

7:40 am-2:30 pm

1 stop6h 50m

$156

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 3/6

11:17 am-1:55 pm

Nonstop2h 38m

Los Angeles

Mon 3/9

7:35 am-10:24 am

Nonstop2h 49m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from Seattle to Monrovia

Have a flexible travel schedule? Discover the best time to fly to Monrovia from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Monrovia

How far ahead should I book a flight from Seattle to Monrovia?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Monrovia. Price data was last updated on February 6, 2026.

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Monrovia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Monrovia?

Currently, March is the cheapest month in which you can book a flight from Seattle to Monrovia (average of $45). Flying from Seattle to Monrovia in July is currently the most expensive (average of $119). 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.

What is the cheapest time of day to fly from SEA to MR9?

Find hourly flight availability from Seattle to Monrovia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 13, 2026.

It’s optimal to fly from Seattle to Monrovia in the evening. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Seattle to Monrovia?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Monrovia. Price data was last updated on February 7, 2026.

Travelers seeking maximum savings on their Seattle to Monrovia flight should consider departing on Sunday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Monrovia

Explore weekly flight availability from Seattle to Monrovia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 13, 2026.

The most flights from SEA to MR9 are scheduled on a Thursday (115 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (42 on average).

How much does it cost to fly round-trip from Seattle to Monrovia?

Reviews of airlines servicing Monrovia

Get insights into the airlines that provide service to Monrovia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Monrovia. Reviews last updated February 13, 2026.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Seattle to Monrovia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,878 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,878 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,191 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,286 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.2
Good
11,277 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Frontier
5.7
Fair
3,052 reviews
Alaska Airlines
8.0
Very good
11,878 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Monrovia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Monrovia?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Monrovia. 9 airlines have flights from Seattle/Tacoma Intl to Monrovia on a regular basis. Booking flights from Seattle/Tacoma Intl to Monrovia should not be difficult; the airport handles an average of 62 outbound flights to Monrovia per day.

  • How popular is this Seattle to Monrovia flight route?

    Flights from Seattle/Tacoma Intl to Monrovia have been viewed 317 times in the past calendar month.

  • How long is the flight from Seattle to Monrovia?

    For as low as $137, Frontier can have you in Monrovia from Seattle in 2h 45m. The distance from Seattle to Monrovia is about 954 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Seattle to Monrovia one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $37. However, be on the lookout for offers from Spirit Airlines and Southwest, as they are both options that can get you from Seattle to Monrovia for a low price.

  • What are the most reliable airlines from Seattle to Monrovia?

    Before booking your flight to Monrovia from Seattle, check out the most reliable airlines to get you to your destination on time: Air China (94%), Copa Airlines (93%), United Airlines( 93%).

  • What are the cheapest flights from Seattle to Monrovia?

    The cheapest flight price from Seattle to Monrovia is $48. On average you can expect to pay $678. The most popular route, (Seattle/Tacoma Intl - Los Angeles), can usually be booked for $104.

  • Can I find deals for flights from Seattle to Monrovia that include hotel bookings?

    Yes. In addition to deals on Seattle to Monrovia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Monrovia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Monrovia.

  • Can I find deals for business class flights from Seattle to Monrovia?

    Yes. Cheapflights offers flight deals from Seattle to Monrovia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Monrovia?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Monrovia (average of $45). Flying from Seattle to Monrovia in July is currently the most expensive (average of $119). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Monrovia

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Los Angeles flights
Seattle to Las Vegas flights
Seattle to Ontario flights
Seattle to San Francisco flights
Seattle to Santa Ana flights
Seattle to San Diego flights
Portland to Las Vegas flights
Portland to Los Angeles flights
Seattle to Palm Springs flights
Seattle to San Jose flights
Seattle to Burbank flights
Everett to Las Vegas flights
Everett to Los Angeles flights
Portland to San Francisco flights
Portland to Ontario flights
Seattle to Sacramento flights
Portland to Palm Springs flights
Portland to San Diego flights
Seattle to Oakland flights
Seattle to Long Beach flights
Everett to San Francisco flights
Portland to Santa Ana flights
Everett to San Diego flights
Spokane to Las Vegas flights
Everett to Santa Ana flights
Portland to San Jose flights
Spokane to Los Angeles flights
Portland to Oakland flights
Portland to Burbank flights
Seattle to Reno flights
Everett to San Jose flights
Portland to Sacramento flights
Spokane to San Diego flights
Seattle to Fresno flights
Portland to Long Beach flights
Seattle to San Luis Obispo flights
Seattle to Santa Barbara flights
Seattle to Monterey flights
Portland to San Luis Obispo flights
Spokane to San Francisco flights
Pasco to Las Vegas flights
Portland to Reno flights
Seattle to Santa Rosa flights
Spokane to Santa Ana flights
Portland to Santa Barbara flights
Portland to Fresno flights
Spokane to Ontario flights
Pasco to San Francisco flights
Pasco to Burbank flights
Seattle to Bakersfield flights

Top 9 airlines flying from Seattle to Monrovia

Discover the top 9 airlines that operate flights from Seattle to Monrovia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$44Average$170FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$48Average$148FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$91Average$260FlexibilityNo cancel feeOn-time85%
DeltaCheapest$101Average$246FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$113Average$244FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$136Average$298FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$140Average$300FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$158Average$282FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$314FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.