How to find the cheapest flight from
Portland (PDX) to Monrovia (ROB)
When is the cheapest time to fly from Portland to Monrovia (PDX - ROB)?
When flying from Portland to Monrovia, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 11% versus a flight in the morning.
Related info for your journey
Useful info, stats and facts about Portland to Monrovia flights.
Alternative routes for Portland to Monrovia
Destination information for Monrovia
Things to know before you go. Useful info for your trip from Portland to Monrovia