It is dependent on when and where you are traveling. Peak fares are in effect weekdays from opening until 9:30 a.m. and between 3:00 and 7:00 p.m. Under peak fares, max fare is about $6, which traveling from Dunn Loring, you can hit rather quickly after passing into DC. Off peak max fare is $3.85.
Depends on the time of day for your trip. Check the WMATA website they have a fee guide
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