How popular is this Seattle to Monrovia flight route?

Flights from Seattle/Tacoma Intl to Monrovia have been viewed 271 times in the past calendar month.

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 $32. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Seattle to Monrovia for a low price.

Weekly flight availability from Seattle to Monrovia

The most flights from SEA to MR9 are scheduled on a Monday (109 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (60 on average).

In terms of precipitation, rainfall in Monrovia ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit Monrovia when rainfall is around 0.0 in.

If weather is an important factor for your trip to Monrovia, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

What are the cheapest flights from Seattle to Monrovia?

The cheapest flight price from Seattle to Monrovia is $107. On average you can expect to pay $777. The most popular route, (Seattle/Tacoma Intl - Los Angeles), can usually be booked for $111.

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: Japan Airlines (95%), Porter Airlines (95%), United Airlines( 90%).

What are the most popular airlines that fly from Seattle to Monrovia?

The most popular airlines flying from Seattle to Monrovia are Frontier, Alaska Airlines and Delta. Something to consider prior to booking your flight.

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. 8 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 81 outbound flights to Monrovia per day.

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.

Find Cheap Flights from Seattle to Monrovia, CA

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Monrovia are usually found in March or May, booked 84 days in advance, depart on a Thursday or Friday and return on a Thursday

Find flight deals from Seattle to Monrovia

Most accurate provider	FlightHub 3 stars
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Popular in	July
Cheapest in	March
Average price	$273

Provider with most accurate pricing for Seattle/Tacoma Intl-Los Angeles flight deals.

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Highest demand for flights based on searches. 7% potential increase in price ($20 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Cheapflights Insights

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

Prices

Airlines

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

It’s optimal to fly from Seattle to Monrovia in the morning. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight at noon.

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

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

Reviews of airlines servicing Monrovia

See what other customers who have flown with Alaska Airlines,Delta, andUnited 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

7.9

Good

13,064 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Alaska Airlines

7.9

Good

13,064 reviews

Alaska Airlines

7.9

Good

13,064 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Delta

7.8

Good

8,650 reviews

Alaska Airlines

7.9

Good

13,064 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

United Airlines

7.4

Good

10,360 reviews

Alaska Airlines

7.9

Good

13,064 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

American Airlines

7.0

Good

12,164 reviews

Alaska Airlines

7.9

Good

13,064 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Frontier

5.5

Fair

2,539 reviews

Alaska Airlines

7.9

Good

13,064 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Related info for your journey

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. 8 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 81 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 271 times in the past calendar month.
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 $32. However, be on the lookout for offers from United Airlines and Delta, 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: Japan Airlines (95%), Porter Airlines (95%), United Airlines( 90%).
What are the cheapest flights from Seattle to Monrovia?
The cheapest flight price from Seattle to Monrovia is $107. On average you can expect to pay $777. The most popular route, (Seattle/Tacoma Intl - Los Angeles), can usually be booked for $111.
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.

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Top 8 airlines flying from Seattle to Monrovia

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$37	Average$215	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$108	Average$281	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$136	Average$238	FlexibilityNo cancel fee	On-time62%
Alaska Airlines	Cheapest$139	Average$319	FlexibilityNo cancel fee	On-time75%
Hawaiian Airlines	Cheapest$142	Average$366	FlexibilityNo cancel fee	On-time85%
United Airlines	Cheapest$148	Average$328	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$149	Average$288	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$227	Average$366	FlexibilityNo cancel fee	On-time71%

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Cheap flights from Seattle (SEA) to Monrovia, CA, CA

Find cheap flights from Seattle to Monrovia with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Seattle to Monrovia

Most accurate provider

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Popular in

Cheapest in

Average price

Cheapflights Insights

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

It’s optimal to fly from Seattle to Monrovia in the morning. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight at noon.

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

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

Weekly flight availability from Seattle to Monrovia

The most flights from SEA to MR9 are scheduled on a Monday (109 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (60 on average).

Reviews of airlines servicing Monrovia

See what other customers who have flown with Alaska Airlines,Delta, andUnited 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.

Related info for your journey

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

How popular is this Seattle to Monrovia flight route?

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

What are the most reliable airlines from Seattle to Monrovia?

What are the cheapest flights from Seattle to Monrovia?

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

How can I find direct flights from Seattle to Monrovia?

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

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.

Complete your trip

Complete your trip to Monrovia by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Seattle to Monrovia by cabin class

Find flights from Seattle to Monrovia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Seattle and Monrovia flights

Browse other Seattle and Monrovia flight options. Last updated on October 14, 2026.

Other flights from Seattle

Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on October 14, 2026.

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Top 8 airlines flying from Seattle to Monrovia

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