Cheap Flights to Portugal | Popular Routes to Portugal from HK$3,289

We understand that plans can change very quickly, so booking a flexible airfare with Expedia makes sense. Simply check the "No change fee" box directly under the "Flexible change policies" filter. Your well-priced and flexible flight to Portugal is just a few clicks away.

When you're ready to lock in your seat to or near Portugal, these top airlines are waiting to welcome you aboard:

• TAP Portugal - 277 flights to or near Portugal each month, including 251 flights to Humberto Delgado Airport (LIS) per month.
• United Airlines - 91 flights to or near Portugal each month, including 60 flights to Humberto Delgado Airport (LIS) per month.
• Delta Air Lines - 60 flights to or near Portugal each month, including 60 flights to Humberto Delgado Airport (LIS) per month.

A great strategy for nabbing cheap airfares is to be flexible with your dates. Start by searching for your flight to Portugal, then click on the "flexible dates" link for a list of prices for nearby days. Another good tip? Book in advance. For an idea of fares, HK$4,184 was the lowest price for a flight to Portugal in the last seven days.

The cost of a round-trip ticket to Portugal in the last seven days ranged between HK$4,184 and HK$4,184. If you were journeying one way out of Hong Kong SAR (HKG), you could have nabbed a cheap fare from just HK$3,289.

Depending on your budget, carrier and where you're coming from, one of these leading airports will be your entry point to Portugal:

• Humberto Delgado Airport (LIS) - 403 flights per month.
• Dr. Francisco de Sa Carneiro Airport (OPO) - 56 flights per month.

Flying on a Tuesday, followed by a Monday, is generally the best way to bag the cheapest flight. Steer clear of weekends if you can, because Saturday is typically the costliest day. Spend the money you saved having a blast in Portugal instead!

In the last seven days, flights to Portugal ranged from HK$4,184 to HK$4,184.

If you're eager to enjoy Portugal's most populated city when it's really buzzing, set out for Lisbon District sometime in April, May and August. Similar to most locations in the Northern Hemisphere, summer here begins June 20, with average temperatures of between 18ºC and 27ºC.

An excellent month to purchase low-cost flights to Portugal is February. It's worth remembering that in the United States, an expensive time to reserve a ticket is during the busy month of December.