$1,030 Cheap Flights from Seattle (SEA) to Monrovia (ROB)

View $1,030 flight on Mon, Nov 2, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Monrovia (ROB-Roberts Intl.)

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Cheap Flights from Seattle to Monrovia (SEA-ROB)

Prices were available within the past 7 days and start at $1,030 for one-way flights and $1,749 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Nov 2 - Mon, Nov 23
SEA
Seattle
ROB
Monrovia
$1,749 Roundtrip, found 5 days ago
$1,749
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Mon, Nov 2 from Seattle to Monrovia, returning Mon, Nov 23, priced at $1,749 found 5 days ago
Alaska Airlines
Mon, Nov 2 - Mon, Nov 23
SEA
Seattle
ROB
Monrovia
$1,751 Roundtrip, found 5 days ago
$1,751
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Mon, Nov 2 from Seattle to Monrovia, returning Mon, Nov 23, priced at $1,751 found 5 days ago
Ethiopian Airlines
Mon, Nov 2 - Mon, Nov 23
SEA
Seattle
ROB
Monrovia
$1,755 Roundtrip, found 5 days ago
$1,755
Roundtrip
found 5 days ago
Select Ethiopian Airlines flight, departing Mon, Nov 2 from Seattle to Monrovia, returning Mon, Nov 23, priced at $1,755 found 5 days ago
Ethiopian Airlines
Mon, Nov 2 - Mon, Nov 23
SEA
Seattle
ROB
Monrovia
$1,766 Roundtrip, found 5 days ago
$1,766
Roundtrip
found 5 days ago
Select Ethiopian Airlines flight, departing Mon, Nov 2 from Seattle to Monrovia, returning Mon, Nov 23, priced at $1,766 found 5 days ago
Brussels Airlines
Sat, Oct 31 - Sat, Nov 21
SEA
Seattle
ROB
Monrovia
$1,780 Roundtrip, found 5 days ago
$1,780
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Sat, Oct 31 from Seattle to Monrovia, returning Sat, Nov 21, priced at $1,780 found 5 days ago
Brussels Airlines
Sat, Oct 31 - Sat, Nov 21
SEA
Seattle
ROB
Monrovia
$1,788 Roundtrip, found 5 days ago
$1,788
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Sat, Oct 31 from Seattle to Monrovia, returning Sat, Nov 21, priced at $1,788 found 5 days ago
Brussels Airlines
Sat, Oct 31 - Sat, Nov 21
SEA
Seattle
ROB
Monrovia
$1,789 Roundtrip, found 5 days ago
$1,789
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Sat, Oct 31 from Seattle to Monrovia, returning Sat, Nov 21, priced at $1,789 found 5 days ago
Alaska Airlines
Mon, Oct 5 - Mon, Oct 12
SEA
Seattle
ROB
Monrovia
$1,791 Roundtrip, found 1 day ago
$1,791
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Oct 5 from Seattle to Monrovia, returning Mon, Oct 12, priced at $1,791 found 1 day ago
United
Sun, May 24 - Tue, Jun 30
SEA
Seattle
ROB
Monrovia
$2,230 Roundtrip, found 2 hours ago
$2,230
Roundtrip
found 2 hours ago
Select United flight, departing Sun, May 24 from Seattle to Monrovia, returning Tue, Jun 30, priced at $2,230 found 2 hours ago
Turkish Airlines
Sat, Oct 31 - Sat, Nov 21
SEA
Seattle
ROB
Monrovia
$2,297 Roundtrip, found 5 days ago
$2,297
Roundtrip
found 5 days ago
Select Turkish Airlines flight, departing Sat, Oct 31 from Seattle to Monrovia, returning Sat, Nov 21, priced at $2,297 found 5 days ago

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) cost?
You can find cheap one-way flights from $1,030 and cheap return flights from $1,749 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) with Expedia. Return flights typically cost between $2976 and $5799. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
The cheapest month to fly from SEA to ROB is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
Enter SEA to ROB and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
Ethiopian Airlines is one of the cheapest airlines offering connecting flights from Seattle - Tacoma Intl. (SEA) to Roberts Intl. (ROB), with round-trip tickets starting from around $2976. This flight includes a layover in Washington Dulles Intl. (IAD). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
The earliest flight from Seattle - Tacoma International Airport (SEA) to Roberts International Airport (ROB) typically departs at around 12:25 AM local time, operated by Alaska Airlines and Ethiopian Airlines. This is a seasonal service active in December, allowing you to start your journey early and make the most of your time in Monrovia. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
The busiest day for flights from Seattle - Tacoma Intl. (SEA) to Roberts Intl. (ROB) is a Saturday, with around 18 flights. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, United, and Delta.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
The most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) are in the early morning, from 12am to 3am. About 38% of passengers prefer this time window. Many major carriers, including Alaska Airlines and Ethiopian Airlines, operate flights during this window. This timing works well for those looking to maximize their time upon arrival.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
Flights from SEA to ROB with one stop typically take around 23 hours 20 minutes, covering approximately 6,900 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
Select the "Business class" and "First class" filters when looking for SEA to ROB flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Monrovia from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly typically into Roberts Intl. (ROB) to reach Monrovia. Some flights may connect through major hubs like O'Hare Intl. (ORD), Washington Dulles Intl. (IAD), Hartsfield-Jackson Atlanta Intl. (ATL) before reaching Monrovia. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Monrovia (ROB-Roberts Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Roberts Intl.
Airlines serving
United
Roundtrip price
$1,749
Distance
6899 mi

*Flight schedules are subject to change.

*Available to One Key members.