PHOTO: American Airlines hopes a change in government administrations will be kinder to its plans to expand with Qantas Airways. (Courtesy Flickr/Oliver Holzbauer)

If airline miles bring on the romance in your house, make sure to check out a few new airline shopping portal bonuses that just started. With both American Airlines and United Mileage Plus, you can earn additional airline miles for each dollar you spend when you click through each respective airline’s shopping portal.

Here are the details:

United MileagePlus Explorer runs from Jan. – Feb. 14, 2017

Bonus Offer:

• Tier 1 bonus: 500 miles for qualifying purchases of at least $125
• Tier 2 bonus: 1,000 miles for qualifying purchases of at least $250 or more

Fine Print: During the "Valentine’s Day Bonus" bonus campaign, which runs from 01/30/17 through 02/14/17 at 11:59:59 pm ET (the "Bonus Period"), Member will earn a one-time bonus of up to 1,000 MileagePlus® bonus award miles on qualifying purchases, in addition to the standard MileagePlus miles earned from shopping online through the MileagePlus® Shopping mall. This one-time bonus award will be determined using one of the following tiers, based on Member’s cumulative qualifying purchases made during the Bonus Period: Tier 1 bonus: 500 miles for qualifying purchases of at least $125; or Tier 2 bonus: 1,000 miles for qualifying purchases of at least $250 or more. "Qualifying purchases" do not include returns, cancellations, shipping and handling, taxes, gift card or other cash equivalent purchases, and certain products that are not eligible for bonus miles. Please see the MileagePlus® Shopping mall site for details on product eligibility and other restrictions. Please allow 8-10 weeks after the Bonus Period for bonus award miles to post to your MileagePlus®Shopping account. The Tier 2 bonus provides the maximum number of miles that will be awarded. Void where prohibited by law.

American Airlines is running its shopping portal bonus from Jan. 31– Feb.13, 2017

Bonus Offer:

• Tier 1 bonus: 500 miles for qualifying purchases of at least $125
• Tier 2 bonus: 1,000 miles for qualifying purchases of at least $250 or more

Fine Print: During the "Valentine’s Day Bonus" bonus campaign, which runs from 01/31/17 through 02/13/17 at 11:59:59 pm ET (the "Bonus Period"), Member will earn a one-time bonus of up to 1,000 AAdvantage® miles on qualifying purchases, in addition to the standard AAdvantage® miles earned from shopping online through the AAdvantage eShopping^SM mall. This one-time bonus award will be determined using one of the following tiers, based on Member’s cumulative qualifying purchases made during the Bonus Period: Tier 1 bonus: 500 miles for qualifying purchases of at least $125; or Tier 2 bonus: 1,000 miles for qualifying purchases of at least $250 or more. "Qualifying purchases" do not include returns, cancellations, shipping and handling, taxes, gift card or other cash equivalent purchases, and certain products that are not eligible for bonus miles. Please see the AAdvantage eShopping^SM mall site for details on product eligibility and other restrictions. Please allow 8-10 weeks after the Bonus Period for bonus miles to post to your AAdvantage eShopping^SM account. The Tier 2 bonus provides the maximum number of miles that will be awarded. Void where prohibited by law.

Getting the Most Out of Airline Shopping Portals

Airline shopping portals make it easy to rack up miles on purchases you planned to make anyway. Simply click through either portal to your favorite online store before you make a purchase for your miles to apply to your account. Participating stores vary frequently, but include popular online retailers such as Sephora, Macy’s, Kohl’s, Nine West, and Walmart.com.